Fun2Discover.com STEAM Daily Challenge Archives

 

Answer Today's STEAM Challenge Question

  • Which of the following is NOT considered one of the major volcano types?

    - Basalt dome (Correct Answer)
    - Stratovolcano
    - Lava dome
    - Cinder cone

    Posted On: 2018-12-14

  • Phosphorus is critical to the formation of nucleic acids, ATP and other energy storing molecules. Where are the largest reservoirs for this important mineral on Earth?

    - Animal biomass
    - Ground water, particularly fossil water
    - Sedimentary rocks of marine origin (Correct Answer)
    - Fossil fuels

    Posted On: 2018-12-13

  • Which of the following elements is found in DNA?

    - Calcium
    - Phosphorus (Correct Answer)
    - Zinc
    - Helium

    Posted On: 2018-12-12

  • Which of the following is NOT a characteristic of a decaying unstable isotope?

    - It emits new particles
    - It releases energy
    - It forms new atoms
    - It is more chaotic than random (Correct Answer)

    Posted On: 2018-12-11

  • When a hydrogen atom is in its ground state, what is TRUE about its electron?

    - It is in its lowest energy level (Correct Answer)
    - It is at rest
    - It has escaped from the atom
    - It is inside the nucleus

    Posted On: 2018-12-10

  • What internal layer of Earth allows for isostacy [eye-SOS-tuh-see] of the crust?

    - Outer core
    - Inner core
    - Athenosphere (Correct Answer)
    - Lithosphere

    Posted On: 2018-12-09

  • Of the planets visible to the naked eye, which moves the slowest across the sky on average?

    - Saturn (Correct Answer)
    - Mars
    - Venus
    - Mercury

    Posted On: 2018-12-08

  • Which of the following is NOT considered a rare earth element?

    - Neodymium [nee-oh-DIM-ee-uhm]
    - Yttrium [ih-tree-uhm]
    - Lanthanum [LAN-thuh-nuhm]
    - Uranium (Correct Answer)

    Posted On: 2018-12-07

  • You would like to evaluate the distribution of mRNA in a microbial population. Which method is likely to be most helpful to you?

    - Proteomics [proh-tee-OM-iks]
    - Transcriptomics (Correct Answer)
    - Metagenomics
    - Metabolomics

    Posted On: 2018-12-06

  • The Doppler effect occurs in which of the following?

    - Only in sound waves
    - Only in longitudinal waves
    - Only in transverse waves
    - In all types of waves (Correct Answer)

    Posted On: 2018-12-05

  • The key factor in deciding an electric car’s lifespan is the battery life. Once the electric car’s battery can’t deliver the required power for a car it must be replaced. What is one possible new use for old electric car batteries?

    - Recycling
    - Energy storage units in neighborhoods (Correct Answer)
    - Being used in smaller vehicles like scooters
    - Rebuilding the battery for a different car

    Posted On: 2018-12-04

  • Which of the following lines is perpendicular to y = 6x – 4?

    - y = -x/6 + 5 [y equals negative x over 6 plus 5] (Correct Answer)
    - 2y = 12x + 4
    - y = x + 11
    - y = 1/6(x) -14 [y equals one-sixth x minus 14]

    Posted On: 2018-12-03

  • Which of the following is farthest from the Sun?

    - Kuiper Belt [KY-per]
    - Oort Cloud (Correct Answer)
    - Persephone [per-SEF-uh-nee]
    - Neptune

    Posted On: 2018-12-02

  • Another bacterium living in the mud utilizes the hydrogen sulfide in its own metabolism. What molecule is it most likely to use in a redox reaction with hydrogen sulfide?

    - Ammonia
    - Hydrogen
    - Nitrate (Correct Answer)
    - Iron

    Posted On: 2018-12-01

  • Which of the following species thrives in a salt marsh?

    - Blue crabs (Correct Answer)
    - Sea turtles
    - Coral reefs
    - Alligators

    Posted On: 2018-11-30

  • What impurity found in coal contributes to acid rain?

    - Sulfur
    - Hydrogen
    - Carbon
    - Chlorine

    Posted On: 2018-11-29

  • What happens to the amount of light reflected as the angle of incidence increases when light passes from air to water?

    - It increases (Correct Answer)
    - It decreases
    - It remains the same
    - It increases then decreases

    Posted On: 2018-11-28

  • Ants can lift large masses relative to their body mass. Which of the following mathematical terms describes this relationship?

    - Work/mass
    - Power/surface area
    - Force/mass (Correct Answer)
    - Power/mass

    Posted On: 2018-11-27

  • Phytoplankton [fy-tuh-PLANGK-tuhn] blooms in the North Atlantic happen on a predictable annual cycle, depending on the availability of light and nutrients. In what month would you expect to find the highest chlorophyll concentration?

    - December
    - May (Correct Answer)
    - July
    - October

    Posted On: 2018-11-26

  • Fossils found in the deep ocean are cemented in what kind of rock?

    - Igneous [IG-nee-uhs]
    - Extrusive
    - Sedimentary (Correct Answer)
    - Metamorphic

    Posted On: 2018-11-25

  • Which of the following statements regarding corals and zooxanthellae [zoh-uh-zan-THEL-ee] is FALSE?

    - Corals can live for a few months without their zooxanthellae
    - When a coral bleaches the zooxanthellae die (Correct Answer)
    - The color of a coral tissue is largely due to the zooxanthellae
    - Increased water temperature can prompt a bleaching event

    Posted On: 2018-11-24

  • A periwinkle is what type of organism?

    - Sea urchin
    - Snail (Correct Answer)
    - Barnacle
    - Star fish

    Posted On: 2018-11-23

  • The rate of a reaction is directly dependent on which of the following?

    - Activation energy (Correct Answer)
    - Reactant energy
    - Product energy
    - Difference between reactant energy and product energy

    Posted On: 2018-11-22

  • Why are old documents preserved by sealing them in containers filled with helium?

    - Helium will react with any poisonous gas that enter the container and prevent the gas from harming the document
    - Helium is inexpensive and easy to find
    - Helium is a gas that will not react with any other element including the paper of the document (Correct Answer)
    - Helium will brighten the print on the document

    Posted On: 2018-11-21

  • Force is equivalent to mass times the acceleration of an object. How could you guarantee a decrease in the acceleration of an object?

    - Increase the mass and force
    - Decrease the mass and force
    - Increase the mass and decrease the force (Correct Answer)
    - Increase the force and decrease the mass

    Posted On: 2018-11-20

  • The slope of the line 2y = 10 - 10x is which of the following?

    - -10
    - -5 (Correct Answer)
    - 5
    - 10

    Posted On: 2018-11-19

  • Place the following four items in order from smallest to largest: nucleus, ribosomes [RY-buh-sohms], mitochondria [my-tuh-KON-dree-uh], myoglobin [my-uh-GLOH-bin].

    - MYOGLOBIN, RIBOSOMES, MITOCHONDRIA, NUCLEUS (Correct Answer)
    - RIBOSOMES, MYOGLOBIN,MITOCHONDRIA, NUCLEUS
    - MYOGLOBIN, MITOCHONDRIA, NUCLEUS, RIBOSOMES
    - RIBOSOMES, NUCLEUS, MITOCHONDRIA, MYOGLOBIN

    Posted On: 2018-11-18

  • Protein shape that results from having multiple polypeptides [pol-ee-PEP-tyds] is a part of which level of protein structure?

    - Primary
    - Secondary
    - Tertiary
    - Quaternary (Correct Answer)

    Posted On: 2018-11-17

  • UV radiation is most damaging to which human organ?

    - Heart
    - Lungs
    - Skin (Correct Answer)
    - Liver

    Posted On: 2018-11-16

  • Which of the following is NOT considered one of the major volcano types?

    - Basalt dome (Correct Answer)
    - Stratovolcano
    - Lava dome
    - Cinder cone

    Posted On: 2018-11-15

  • Phosphorus is critical to the formation of nucleic acids, ATP and other energy storing molecules. Where are the largest reservoirs for this important mineral on Earth?

    - Animal biomass
    - Ground water, particularly fossil water
    - Sedimentary rocks of marine origin (Correct Answer)
    - Fossil fuels

    Posted On: 2018-11-14

  • Which of the following elements is found in DNA?

    - Calcium
    - Phosphorus (Correct Answer)
    - Zinc
    - Helium

    Posted On: 2018-11-13

  • Which of the following is NOT a characteristic of a decaying unstable isotope?

    - It emits new particles
    - It releases energy
    - It forms new atoms
    - It is more chaotic than random (Correct Answer)

    Posted On: 2018-11-12

  • When a hydrogen atom is in its ground state, what is TRUE about its electron?

    - It is in its lowest energy level (Correct Answer)
    - It is at rest
    - It has escaped from the atom
    - It is inside the nucleus

    Posted On: 2018-11-11

  • What internal layer of Earth allows for isostacy [eye-SOS-tuh-see] of the crust?

    - Outer core
    - Inner core
    - Athenosphere (Correct Answer)
    - Lithosphere

    Posted On: 2018-11-10

  • Of the planets visible to the naked eye, which moves the slowest across the sky on average?

    - Saturn (Correct Answer)
    - Mars
    - Venus
    - Mercury

    Posted On: 2018-11-09

  • Which of the following is NOT considered a rare earth element?

    - Neodymium [nee-oh-DIM-ee-uhm]
    - Yttrium [ih-tree-uhm]
    - Lanthanum [LAN-thuh-nuhm]
    - Uranium (Correct Answer)

    Posted On: 2018-11-08

  • You would like to evaluate the distribution of mRNA in a microbial population. Which method is likely to be most helpful to you?

    - Proteomics [proh-tee-OM-iks]
    - Transcriptomics (Correct Answer)
    - Metagenomics
    - Metabolomics

    Posted On: 2018-11-07

  • The Doppler effect occurs in which of the following?

    - Only in sound waves
    - Only in longitudinal waves
    - Only in transverse waves
    - In all types of waves (Correct Answer)

    Posted On: 2018-11-06

  • The key factor in deciding an electric car’s lifespan is the battery life. Once the electric car’s battery can’t deliver the required power for a car it must be replaced. What is one possible new use for old electric car batteries?

    - Recycling
    - Energy storage units in neighborhoods (Correct Answer)
    - Being used in smaller vehicles like scooters
    - Rebuilding the battery for a different car

    Posted On: 2018-11-05

  • Which of the following lines is perpendicular to y = 6x – 4?

    - y = -x/6 + 5 [y equals negative x over 6 plus 5] (Correct Answer)
    - 2y = 12x + 4
    - y = x + 11
    - y = 1/6(x) -14 [y equals one-sixth x minus 14]

    Posted On: 2018-11-04

  • Which of the following is farthest from the Sun?

    - Kuiper Belt [KY-per]
    - Oort Cloud (Correct Answer)
    - Persephone [per-SEF-uh-nee]
    - Neptune

    Posted On: 2018-11-03

  • Another bacterium living in the mud utilizes the hydrogen sulfide in its own metabolism. What molecule is it most likely to use in a redox reaction with hydrogen sulfide?

    - Ammonia
    - Hydrogen
    - Nitrate (Correct Answer)
    - Iron

    Posted On: 2018-11-02

  • Which of the following species thrives in a salt marsh?

    - Blue crabs (Correct Answer)
    - Sea turtles
    - Coral reefs
    - Alligators

    Posted On: 2018-11-01

  • What impurity found in coal contributes to acid rain?

    - Sulfur (Correct Answer)
    - Hydrogen
    - Carbon
    - Chlorine

    Posted On: 2018-10-31

  • What happens to the amount of light reflected as the angle of incidence increases when light passes from air to water?

    - It increases (Correct Answer)
    - It decreases
    - It remains the same
    - It increases then decreases

    Posted On: 2018-10-30

  • Ants can lift large masses relative to their body mass. Which of the following mathematical terms describes this relationship?

    - Work/mass
    - Power/surface area
    - Force/mass (Correct Answer)
    - Power/mass

    Posted On: 2018-10-29

  • Phytoplankton [fy-tuh-PLANGK-tuhn] blooms in the North Atlantic happen on a predictable annual cycle, depending on the availability of light and nutrients. In what month would you expect to find the highest chlorophyll concentration?

    - December
    - May (Correct Answer)
    - July
    - October

    Posted On: 2018-10-28

  • Which of the following biomes, on average, receives the lowest amount of annual precipitation?

    - Temperate deciduous forest [di-SIJ-oo-uhs]
    - Tundra (Correct Answer)
    - Taiga
    - Grasslands

    Posted On: 2018-10-27

  • Extremely coarse grained igneous rocks, with minerals larger than 1 inch, are evidence of which of the following?

    - Volcanic rocks with previously formed crystals
    - Volcanic rocks cooled rapidly along ocean floor fissures
    - Magma cooling with high volatile content (Correct Answer)
    - Magma cooling quickly to form aplite

    Posted On: 2018-10-26

  • In the chemical formula for ammonia, NH3, which of the following does the subscript 3 represent?

    - The number of hydrogen atoms in each molecule of ammonia (Correct Answer)
    - The number of nitrogen atoms in each molecule of ammonia
    - The number of nitrogen and hydrogen atoms in each molecule of ammonia
    - The number of ammonia molecules that will bond together

    Posted On: 2018-10-25

  • Which of the following properties is NOT a property of a covalent molecular compound?

    - Low melting point X
    - Low boiling point Y
    - Good electrical conductivity (Correct Answer)
    - Poor thermal conductivity

    Posted On: 2018-10-24

  • Multiple Choice Which of the following is an example of a compound?

    - O2
    - O3
    - HCI (Correct Answer)
    - CI2

    Posted On: 2018-10-23

  • The size of a wind-generated wave formed in open ocean depends on which of the following pairs of characteristics of wind?

    - Strength and duration (Correct Answer)
    - Strength and direction
    - Fetch and direction
    - Fetch and temperature

    Posted On: 2018-10-22

  • Which of the following kinds of mammal teeth are used to bite and cut?

    - Incisors (Correct Answer)
    - Premolars
    - Molars
    - Grinders

    Posted On: 2018-10-21

  • If you see a flash of lightning and ten seconds pass before you hear a clap of thunder, about how far away to the nearest mile is the thunderstorm?

    - 2 (Correct Answer)
    - 10
    - 15

    Posted On: 2018-10-20

  • Which of the following statements is true about lightning?

    - Lightning never strikes the same location twice
    - A car’s rubber tires will protect its occupants from lightning
    - If outside during a lightning storm, it is best to take a low, crouching position with feet together (Correct Answer)
    - Lightning strike victims retain an electrical charge and will shock someone who touches them

    Posted On: 2018-10-19

  • Which of the following cosmic phenomena gave rise to most of the iron found on Earth?

    - Red giants
    - Supernovae [soo-per-NOH-vee] (Correct Answer)
    - Quasars [KWAY-zahrs]
    - Pulsars

    Posted On: 2018-10-18

  • Which of the following is an adaptation in birds that facilitates flight?

    - Hollow bones (Correct Answer)
    - Sharp claws
    - Smooth feathers
    - Small beaks

    Posted On: 2018-10-17

  • Which of the following types of feather helps birds maintain a constant body temperature?

    - Contour
    - Down (Correct Answer)
    - Barbed
    - Ribbed

    Posted On: 2018-10-16

  • Emma puts a thermometer into a glass filled with hot water. Why does the mercury inside the thermometer rise?

    - Air bubbles are released
    - Heat from the water makes it expand (Correct Answer)
    - Heat from the water makes it contract
    - Air pressure above the water pulls it up

    Posted On: 2018-10-15

  • Which of the following is, to date, the most promising method of disposing of nuclear waste?

    - Combining it with carbon dioxide
    - Storing it underground in a geologic formation (Correct Answer)
    - Storing it in a low-level disposal vault
    - Diluting it before pouring it into the ocean

    Posted On: 2018-10-14

  • A glass of water with ice cubes in it has a mass of 300 grams. What will the mass in grams be immediately after the ice has melted?

    - 300 (Correct Answer)
    - 600
    - 350
    - 400

    Posted On: 2018-10-13

  • What is the kinetic energy in joules of a 10-kilogram object moving at a velocity of 2 meters per second?

    - 20 (Correct Answer)
    - 21
    - 40
    - 200

    Posted On: 2018-10-12

  • Which of the following is the best explanation of how rift valleys are formed?

    - The scouring of bedrock as glaciers retreat
    - Tectonic divergence (Correct Answer)
    - The accumulation of glacial deposits deposited as glaciers retreat
    - A wide river scours out the land then shifts direction

    Posted On: 2018-10-11

  • Which of the following types of maps would show the most accurate representation of the entire surface of the Earth?

    - Mercator projection
    - Equal-area projection
    - Globe (Correct Answer)
    - Contour projection

    Posted On: 2018-10-10

  • Which of the following annelids has a sucker at each end of its body?

    - Earthworm
    - Leech (Correct Answer)
    - Bristleworm
    - Polchaete

    Posted On: 2018-10-09

  • Which of the following units is most commonly used in the U.S. to compare the energy content of two different fuel sources?

    - BTU (Correct Answer)
    - Barrel
    - Kilowatt
    - Gallon

    Posted On: 2018-10-08

  • A house built in the United States with passive solar capabilities needs to have its large windows facing which compass direction?

    - North
    - South (Correct Answer)
    - East
    - West

    Posted On: 2018-10-07

  • Which of the following will allow measurement of a liquid’s volume with the greatest precision?

    - 50 milliliter cylinder graduated in 1 milliliter increments
    - 100 milliliter cylinder graduated in 0.5 milliliter increments (Correct Answer)
    - 100 milliliter cylinder graduated in 1 milliliter increments
    - 200 milliliter cylinder graduated in 5 milliliter increments

    Posted On: 2018-10-06

  • Leaves with an undivided blade are called which of the following?

    - Tendrils
    - Spines
    - Compound
    - Simple (Correct Answer)

    Posted On: 2018-10-05

  • The volume of cube C is 8 cubic centimeters. Cube D has an edge 3 times the edge of cube C. What is the volume of cube D in cubic centimeters?

    - 216 (Correct Answer)
    - 218
    - 220
    - 199

    Posted On: 2018-10-04

  • Which of the following would be the approximate measure of the length of a soccer field?

    - 1 decameter
    - 10 kilometers
    - 100 meters (Correct Answer)
    - 1000 centimeters

    Posted On: 2018-10-03

  • Which of the following cannot be classified within the classical three states of matter?

    - Gasoline
    - Liquid nitrogen
    - Bleach
    - Liquid crystal (Correct Answer)

    Posted On: 2018-10-02

  • What is the potential difference in volts between two points, located 2 meters apart, in a constant electric field of 1 volt per meter?

    - 2 (Correct Answer)
    - 3
    - 1
    - 4

    Posted On: 2018-10-01

  • Plasma is the part of human blood that consists mostly of which of the following?

    - Red blood cells X
    - White blood cells Y
    - Water (Correct Answer)
    - Hemoglobin

    Posted On: 2018-09-30

  • Which of the following is NOT part of the human respiratory system?

    - Pharynx [FAR-ingks] X
    - Larynx [LAR-ingks] Y
    - Esophagus [i-SOF-uh-guhs] (Correct Answer)
    - Trachea [TRAY-kee-uh]

    Posted On: 2018-09-29

  • Orthoclase feldspar primarily weathers by which of the following processes to form clay minerals:

    - abrasion
    - hydrolysis (Correct Answer)
    - exfoliation
    - dissolution

    Posted On: 2018-09-28

  • Which of the following regulate development in animals, plants and fungi, and were first discovered in Drosophila:

    - homeobox (read as: HOME-ee-oh-box genes) (Correct Answer)
    - p53
    - shock genes
    - oncogenes

    Posted On: 2018-09-27

  • Which of the following are MOST often used to introduce foreign genes into mammalian genomes:

    - sliceosomes (read as: sly-see-oh-somz
    - zinc fingers
    - plasmids (Correct Answer)
    - telomeres

    Posted On: 2018-09-26

  • Arrange the following compounds in order of INCREASING ionic characteristic: HCl; LiBr; CO; KF

    - HCl; LiBr; KF; CO
    - CO; HCl; LiBr; KF (Correct Answer)
    - LiBr; CO; HCl; KF
    - LiBr; HCl; KF; CO;

    Posted On: 2018-09-25

  • Which of the following elements has the largest second ionization energy:

    - fluorine
    - nitrogen
    - boron
    - lithium (Correct Answer)

    Posted On: 2018-09-24

  • Elastic deformation is BEST described as:

    - the linear portion of a stress/strain curve (Correct Answer)
    - the ultimate strength of a material
    - 0.02% elongation
    - permanent deformation

    Posted On: 2018-09-23

  • In a compound gearing arrangement where a 40-tooth gear drives an 80-tooth gear which is directly connected to a 50-tooth gear that drives a 100-tooth gear, the total reduction is a factor of:

    - 2
    - 2.5
    - 4 (Correct Answer)
    - 5

    Posted On: 2018-09-22

  • The Wilkinson Microwave Anisotropy Probe was specifically designed to:

    - map all matter in the universe down to a resolution of 1 arc second
    - map the cosmic background radiation to much greater accuracy and precision than previous instruments (Correct Answer)
    - map the size and locations of the Local Group
    - map the exact location of the active galactic center of the Milky Way

    Posted On: 2018-09-21

  • A sidereal drive is a motor on a telescope that turns it in a certain direction to keep the telescope aimed at a certain celestial object. Giving your answer as north, south, east or west, in what direction does it turn?

    - North
    - South
    - East
    - West (Correct Answer)

    Posted On: 2018-09-20

  • A relatively new scourge to the citrus growers in Florida, what is the common name of the citrus disease caused by a species of bacteria called C. liberibacter and spread by an introduced non-native insect?

    - greening (Correct Answer)
    - citrusitis
    - browning
    - orange disease

    Posted On: 2018-09-19

  • Which of the following instruments is BEST used to image small, transparent and fluorescent specimens and obtain optical sections without the need for mechanical sectioning:

    - X-ray microanalyzer
    - scanning electron microscope
    - transmission electron microscope
    - confocal laser scanning microscope (Correct Answer)

    Posted On: 2018-09-18

  • Which of the following is NOT true of isotherms:

    - they are more widely spaced over the equatorial regions
    - they are more closely spaced over North America in the summer than in the winter (Correct Answer)
    - they tend to be linear in form in the Southern Hemisphere south of 40º latitude
    - they are lines that connect places with the same average temperature

    Posted On: 2018-09-17

  • Which of the following is the BEST example of an ocean current found in the intertidal littoral zone that flows seaward:

    - rip current (Correct Answer)
    - tidal bore
    - the Antarctic Circumpolar Current
    - equatorial tidal current

    Posted On: 2018-09-16

  • Which of the following are coterminal angles in standard position:

    - 80° and –190°
    - 1160° and 800° (Correct Answer)
    - 181° and –118°
    - 550º and 185º

    Posted On: 2018-09-15

  • In the famous experiment by Hershey and Chase that showed DNA was the genetic material, what did they use to transmit the DNA into E. coli:

    - other E. coli
    - electric shocks
    - a blender
    - bacteriophage (Correct Answer)

    Posted On: 2018-09-14

  • Rounded to the nearest whole number, what is the percent of magnesium in magnesium carbonate, given the atomic mass of magnesium is 24 grams per mole?

    - 20
    - 29 (Correct Answer)
    - 30
    - 31

    Posted On: 2018-09-13

  • Which of the following is typically TRUE of organic compounds:

    - acetylene contains delocalized pi bonds
    - the simplest carboxylic acid is ethanoic acid
    - ketones have no hydrogen atoms directly attached to the carbonyl group (Correct Answer)
    - alcohols contain nonpolar hydroxyl groups

    Posted On: 2018-09-12

  • A protanomalous person has decreased sensitivity of the red cones in his or her eyes. Which of the following color pairs will this person have difficulty distinguishing between:

    - red and green
    - blue and purple (Correct Answer)
    - yellow and turquoise
    - dark navy blue and black

    Posted On: 2018-09-11

  • The process in which an atom reradiates a photon after interacting with an incident photon of the same energy is called:

    - Rayleigh scattering
    - the Cherenkov effect
    - Bragg’s Law
    - Thomson scattering (Correct Answer)

    Posted On: 2018-09-10

  • What is the magnifying power of the telescope with a focal length of 5 meters and an eyepiece of 20 millimeters?

    - 200 times
    - 250 times (Correct Answer)
    - 225 times
    - 500 times

    Posted On: 2018-09-09

  • Landform deposits called linear dunes that were recently found on the moon Titan are MOST directly produced by:

    - tectonic activity
    - wind (Correct Answer)
    - erosion by the retreat and advance of large seas of liquid methane
    - streaks in the surface following low-angle meteorite impacts

    Posted On: 2018-09-08

  • Some vitamin tablets contain high concentrations of zinc and must be formulated to include high levels of which of the following minerals in order to prevent an induced anemia:

    - copper (Correct Answer)
    - calcium
    - magnesium
    - boron

    Posted On: 2018-09-07

  • Arrange the following 4 layers of the Earth’s atmosphere in order of INCREASING air pressure: stratosphere; exosphere; thermosphere; troposphere

    - XOSPHERE; THERMOSPHERE; STRATOSPHERE; TROPOSPHERE (Correct Answer)
    - THERMOSPHERE; XOSPHERE; STRATOSPHERE; TROPOSPHERE
    - XOSPHERE; STRATOSPHERE; TROPOSPHERE; THERMOSPHERE
    - TROPOSPHERE; XOSPHERE; THERMOSPHERE; STRATOSPHERE

    Posted On: 2018-09-06

  • Which of the following is the BEST example of a non-point source pollution:

    - leaching from a landfill
    - a leaking septic tank
    - fertilizer runoff from agricultural fields (Correct Answer)
    - chemical spills at a mining site

    Posted On: 2018-09-05

  • Find the sum of all interior angles, in degrees, in a regular polygon having 14 sides:

    - 2160 (Correct Answer)
    - 2250
    - 1890
    - 1790

    Posted On: 2018-09-04

  • In early experiments in the mid-1900’s, the source and fate of oxygen involved in photosynthesis was mostly determined through experiments that used:

    - animals in closed containers that would die unless a plant was introduced into the container
    - a heavy isotope of oxygen as a tracer (Correct Answer)
    - fluorescent labeling of various enzymes and organic products
    - simple accounting of the atomic mass of all the reactants and products

    Posted On: 2018-09-03

  • If you roll 2 fair dice simultaneously, what is the probability, given as a fraction, that you will roll the number 6 on AT LEAST one die?

    - 11/36 (Correct Answer)
    - 9/40
    - 10/35
    - 6/29

    Posted On: 2018-09-02

  • Which of the following salt solutions, all at 1.0 molar concentration, will have a pH value less than 7:

    -  NH4Cl (Correct Answer)
    - NaC2H3O2
    - KCl
    - LiBr

    Posted On: 2018-09-01

  • Often some of the strongest spectral lines in cold interstellar gas are
    produced by:

    - neutral lithium
    - ionized iron
    - carbon and iron
    - calcium and sodium (Correct Answer)

    Posted On: 2018-08-31

  • The presence of which of the following is evidence that 2 valley glaciers have or had at one time joined into a larger glacier:

    - perpendicular striation pattern
    - overlapping end moraines
    - medial moraine (Correct Answer)
    - V-shaped valley

    Posted On: 2018-08-30

  • Which of the following must be TRUE for a tree that doubled its mass over a growing period of 2 years:

    - it has doubled its volume
    - it has doubled its number of atoms
    - it has doubled its inertia (Correct Answer)
    - it has doubled its density

    Posted On: 2018-08-29

  • Which of the following is closest to the meaning of intercellular (read carefully as: in-TER-cellular):

    - from within cells
    - between cells (Correct Answer)
    - inside of cells
    - underneath cells

    Posted On: 2018-08-28

  • You discover an igneous (read as: IG-nee-ehs) rock with a course-grained texture and the appearance of a mass of intergrown crystals of similar size. At which of the following locations did magma most likely solidify?

    - In the ocean
    - On the surface
    - Far below the surface (Correct Answer)
    - No more than 100 feet below the surface

    Posted On: 2018-08-27

  • An organism’s way of life, including its habitat, food, predators, and other organisms it competes with for resources make up an organism’s:

    - Ecosystem
    - Niche (Correct Answer)
    - Biome
    - Food pyramid

    Posted On: 2018-08-26

  • If convection currents in the mantle stopped, which of the following would likely happen?

    - The number of earthquakes would increase
    - The number of earthquakes would stay the same
    - Earthquakes would get stronger
    - The number of earthquakes would decrease (Correct Answer)

    Posted On: 2018-08-25

  • The presence of which of the following in the ocean best explains why electrical current is generally better conducted through the ocean than a freshwater lake.

    - Dissolved salt (Correct Answer)
    - Large waves
    - Eels
    - Petroleum waste from large ships

    Posted On: 2018-08-24

  • If you went hunting tomorrow for fossil fuels, which of these ancient habitats would you avoid?

    - Desert (Correct Answer)
    - Swamp
    - Forest
    - Coral reef

    Posted On: 2018-08-23

  • Which of the following phrases does NOT reflect why transgenic animals are currently being produced in the United States?

    - To have animal models for human diseases
    - To test the purity of human proteins (such as human insulin) used as drugs
    - For the production of human food (Correct Answer)
    - Improving animal health or productivity

    Posted On: 2018-08-22

  • Which of the following is true about deep mid-ocean ridge ecosystems?

    - There are no primary producers, only consumers and decomposers
    - The organisms are highly mobile, ascending daily to the ocean surface to feed
    - The source of energy is chemical energy from hydrothermal vents of the seafloor (Correct Answer)
    - The organisms have the most dynamic and complex coloring on their bodies so they can be

    Posted On: 2018-08-21

  • Our sun is expected to last for approximately how many more years?

    - 50 million
    - 500 million
    - 5 billion (Correct Answer)
    - 50 billion

    Posted On: 2018-08-20

  • Two isotopes of the same element differ with respect to which of the following?

    - Number of protons
    - Number of electrons
    - Number of neutrons (Correct Answer)
    - Atomic number

    Posted On: 2018-08-19

  • Which of the following is NOT a fossil fuel?

    - Oil
    - Hydrogen gas (Correct Answer)
    - Natural gas
    - Coal

    Posted On: 2018-08-18

  • Electrical current is best conducted through which of the following substances?

    - Copper (Correct Answer)
    - Water
    - Wood
    - Stone

    Posted On: 2018-08-17

  • Which of the following statements is NOT true about the kingdom Fungi?

    - Fungi are more closely related to plants than animals (Correct Answer)
    - Fungi are not dependent on light
    - Fungi can grow in any direction
    - Fungi usually reproduce by wind-disseminated spores

    Posted On: 2018-08-16

  • Which of the following is NOT necessarily a regular polygon?

    - Square
    - Isosceles triangle (Correct Answer)
    - Octagon with all internal angles of 135°
    - Hexagon with all internal angles of 120°

    Posted On: 2018-08-15

  • What is the color of the lowest frequency light that is visible to humans?

    - Green
    - Blue
    - Red (Correct Answer)
    - Yellow

    Posted On: 2018-08-14

  • Molly walks an average of 3 strides in 2 seconds. At this rate, how many strides can she make in 1 minute?

    - 30
    - 60
    - 90 (Correct Answer)
    - 120

    Posted On: 2018-08-13

  • Which of the following organisms is considered to be a crustacean?

    - Jellyfish
    - Diatom
    - Copepod (Correct Answer)
    - Foraminifera

    Posted On: 2018-08-12

  • The reactivity of an element depends predominantly on its:

    - Atomic mass
    - Valence electron configuration (Correct Answer)
    - Electronegativity
    - Relative abundance

    Posted On: 2018-08-11

  • Which of the following substances is likely to be the most reactive in water?

    - Sodium (Correct Answer)
    - Mercury
    - Aluminum
    - Gold

    Posted On: 2018-08-10

  • Where is the geometric center of a cube?

    - It is at the center of its face
    - It is at the vertex of two faces
    - It is at the point of intersection of the diagonals of a face
    - It is at the point of intersection of the cube’s diagonals (Correct Answer)

    Posted On: 2018-08-09

  • What rock type would you not expect to find on the Moon?

    - Rock similar in composition to Earth’s mantle
    - Layered sedimentary rock (Correct Answer)
    - Igneous (read as: IG-nee-ehs) rock
    - Rock similar in composition to a metallic meteor

    Posted On: 2018-08-08

  • Shortly after its formation, Earth’s moon was?

    - 8
    - Closer to Earth than it is now (Correct Answer)
    - Farther from Earth than it is now
    - The same distance from Earth as it is now
    - Oscillating between further from and closer to Earth

    Posted On: 2018-08-07

  • In 12 seconds, a car goes from 0 to 60 miles per hour. In miles per hour per second, what is its average rate of acceleration?

    - 2
    - 5 (Correct Answer)
    - 6

    Posted On: 2018-08-06

  • Which of the following household appliances uses the least amount of energy over the course of a year?

    - Refrigerator
    - Water heater
    - Air conditioner
    - Dishwasher (Correct Answer)

    Posted On: 2018-08-05

  • If the temperature change of a pot of water is 180 Kelvin, what is the temperature change in degrees Celsius?

    - 180 (Correct Answer)
    - 160
    - 212
    - 250

    Posted On: 2018-08-04

  • The Earth’s crust accounts for about what percentage of the Earth’s volume?

    - 1% (Correct Answer)
    - 5%
    - 10%
    - 15%

    Posted On: 2018-08-03

  • Which of the following best explains why most food chains have fewer than five organisms in them?

    - Energy is too complex to cycle through multiple steps
    - The amount of energy at the producer level can only support a limited number of consumers (Correct Answer)
    - There is only enough room on Earth for a certain number of animals, and they are divided
    - Ecosystems can only support a certain number of organisms, and they are divided into food

    Posted On: 2018-08-02

  • If you stick a thermometer into a frozen slurry of lemonade as it is melting, you will find that the reading on the thermometer is:

    - Slowly falling
    - Not changing, as long as there is ice (Correct Answer)
    - Slowly rising
    - Quickly rising

    Posted On: 2018-08-01

  • Which of the following is an example of an igneous (read as: IG-nee-ehs) rock?

    - Flint
    - Obsidian (read as: ohb-SI-dee-ahn) (Correct Answer)
    - Anthracite (read as: AN-thrah-syt)
    - Chalk

    Posted On: 2018-07-31

  • Sea ice floating on the oceans is the first to melt as the Earth’s climate warms. Which of the following most accurately models the impact melting sea ice has on global sea level?

    - Like the water level in a basin when you pour a glass of water into it, sea level will rise significantly
    - The ocean floor rocks and sediments are porous like sponges. They will absorb the additional water from the ice and sea level will not rise significantly
    - Like a melting ice cube sitting in a glass of water, the water and the melted cube will evaporate and sea level will drop
    - Like ice cubes in a glass of water, the ice has already displaced the water so as the ice melts, sea level will not rise significantly (Correct Answer)

    Posted On: 2018-07-30

  • What type of boundary is described as two lithospheric plates moving toward one another and colliding?

    - Divergent (Correct Answer)
    - Convergent
    - Transforment

    Posted On: 2018-07-29

  • In a symbiotic relationship, what is the minimum number of organisms that benefits from the relationship?

    - 1
    - 2
    - 0 (Correct Answer)
    - 6

    Posted On: 2018-07-28

  • What type of energy production does NOT require a turbine with a shaft to spin a generator in order to create electricity?

    - Geothermal power
    - Hydropower
    - Hydrogen fuel cells (Correct Answer)
    - Nuclear (fission) reactors

    Posted On: 2018-07-27

  • For an environment where a long-lasting toxin has been introduced, in which organism of a food chain will you expect to find the least accumulation of the toxin?

    - Producer (Correct Answer)
    - Herbivore (read as: (H)URR-bi-vohr)
    - Primary predator
    - Secondary predator

    Posted On: 2018-07-26

  • Deposition of primarily which compound leads to the formation of stalactites and stalagmites in caves?

    - CALCIUM CARBONATE (Correct Answer)
    - CALCIUM CITRATE
    - CALCIUM GLUCONATE
    - CALCIUM PHOSPATE

    Posted On: 2018-07-25

  • Ethanol is being used as a way to reduce dependence on fossil fuels. Which of the following best describes the production of ethanol?

    - Distilling gases available in waste, such as methanol
    - Exposing batteries to sunlight
    - Fermenting crops like corn and sugar cane (Correct Answer)
    - Using broken parts from cars as they get rusty

    Posted On: 2018-07-24

  • A red ball has a mass of 2 grams and a volume of 8 cubic centimeters. A yellow ball has a mass of 5 grams and a volume of 2 cubic centimeters. When both balls are placed into a bucket of water, which of the following is true?

    - The yellow ball floats and the red ball sinks
    - The red ball floats and the yellow ball sinks (Correct Answer)
    - Both the red and yellow ball float
    - Both the red and yellow ball sink

    Posted On: 2018-07-23

  • A metal and plastic coin, having the same size are heated to the same temperature and dropped into the same tub of water for 30 seconds. Which coin will have the lower temperature?

    - Metal coin (Correct Answer)
    - Plastic coin
    - Both coins will have the same temperature
    - Cannot be determined

    Posted On: 2018-07-22

  • What is the SI unit of force?

    - Newton (Correct Answer)
    - Dyne
    - Poundal
    - Gravity

    Posted On: 2018-07-21

  • Which of the following describes how sea ice is different from continental ice?

    - Continental ice is denser than sea ice
    - Sea ice is saline while continental ice is fresh
    - Sea ice floats on the water while continental ice sits on land (Correct Answer)
    - Sea ice is constantly changing while continental ice remains the same

    Posted On: 2018-07-20

  • Which of the following is NOT something a river can do to rock?

    - Cut down through hundreds of meters of rock
    - Polish rock
    - Transport rock hundreds of miles
    - Melt rock (Correct Answer)

    Posted On: 2018-07-19

  • Using current technologies, which of the following sources of energy is nonrenewable?

    - Solar
    - Wind
    - Nuclear (Correct Answer)
    - Geothermal

    Posted On: 2018-07-18

  • Which of the following is not a fossil fuel?

    - Coal
    - Natural gas
    - Petroleum
    - Uranium (Correct Answer)

    Posted On: 2018-07-17

  • Which of the following distances is longest?

    - Half a kilometer
    - Half a decimeter
    - 600 meters (Correct Answer)
    - 40 decameters

    Posted On: 2018-07-16

  • What is the metric unit for mass?

    - The pound
    - Stones
    - The kilogram (Correct Answer)
    - The micron

    Posted On: 2018-07-15

  • Which of the following is the scientific class to which spider belong?

    - Vertebrate
    - Echinoderm (read as: i-KY-neh-dehrm)
    - Arachnid (read as: ah-RAHK-nid) (Correct Answer)
    - Amphibian (read as: ahm-FI-bee-ehn)

    Posted On: 2018-07-14

  • You find a new creature measuring over 4 millimeters in size in your bedroom it has 6 legs, it is some type of:

    - Arachnid (read as: ah-RAHK-nid)
    - Larva
    - Insect (Correct Answer)
    - Echinoderm (read as: i-KY-neh-dehrm)

    Posted On: 2018-07-13

  • What is the name of the largest volcano on Mars?

    - Caldera
    - Alba Mons
    - Olympus Mons (Correct Answer)
    - Albor Tholus

    Posted On: 2018-07-12

  • If you could weigh electrons and protons on a simple balance. How many electrons do you need to balance a single proton?

    - 18 hundred (Correct Answer)
    - 18 thousand
    - 18 million
    - More than a billion

    Posted On: 2018-07-11

  • Neutrons are approximately the mass of:

    - Protons (Correct Answer)
    - Positrons
    - Electrons
    - Neutrinos

    Posted On: 2018-07-10

  • Changes in length of daylight are primarily a result of:

    - Change in the distance Earth is from the Sun
    - Change in the direction the Earth tilts relative to the Sun (Correct Answer)
    - Change in the Moon’s position relative to the Sun
    - Change in how fast the Earth turns on its axis

    Posted On: 2018-07-09

  • How many hours of daylight does the South Pole receive on June 21?

    - 0 (Correct Answer)
    - 24
    - 12
    - 4

    Posted On: 2018-07-08

  • Biodiesel, which is another form of biomass energy, is obtained from?

    - Food products, including vegetable oils and animal fats (Correct Answer)
    - Refining the available diesel
    - Combining diesel with extractions from mineral beds
    - Using a plant's photosynthesis

    Posted On: 2018-07-07

  • Which of the following can cause an increase in the amount of acid rain?

    - Decrease in the ozone layer
    - Increase in oil spills
    - Increased burning of fossil fuels (Correct Answer)
    - Decrease in pesticide use

    Posted On: 2018-07-06

  • Which of the following types of weathering is caused by acid rain?

    - Chemical (Correct Answer)
    - Mechanical
    - Biotic
    - Tropical

    Posted On: 2018-07-05

  • Which of the following elements is NOT a noble gas?

    - Xenon
    - Radon
    - Krypton
    - Bromine (Correct Answer)

    Posted On: 2018-07-04

  • Fossils are most often found in what type of rock?

    - Igneous (read as: IG-nee-us)
    - Metamorphic
    - Sedimentary (Correct Answer)
    - Granitic

    Posted On: 2018-07-03

  • A person applies for a patent on an engine that is 100% efficient. This application would be rejected because the engine would violate the:

    - Law of conservation of momentum
    - Law of friction
    - Law of gravity
    - Laws of thermodynamics (Correct Answer)

    Posted On: 2018-07-02

  • Which of the following is a chemical reaction?

    - Burning lamp oil (Correct Answer)

    Posted On: 2018-07-01

  • Which of the following is least likely to be impacted by decreased environmental pH?

    - Pteropods [TER-uh-pods]
    - Diatoms (Correct Answer)
    - Coccolithophorids [koh-koh-lith-uh-FOH-rids]
    - Mussels

    Posted On: 2018-06-30

  • Which of the following is NOT a product of the Krebs, or tricarboxylic [trahy-kahr-bok-SIL-ik] acid (TCA) cycle?

    - ATP
    - NADH
    - H2O (Correct Answer)
    - CO2

    Posted On: 2018-06-29

  • Formation of a precipitate is one sign that a chemical reaction has occurred. Which of the following is most likely to precipitate in water?

    - Nitrate
    - Sulfide (Correct Answer)
    - Acetate
    - Chloride

    Posted On: 2018-06-28

  • Which of the following genetic disorders is caused by a deletion of a gene on a chromosome?

    - Edwards syndrome
    - Down syndrome
    - Phenylketonuria [fen-l-kee-toh-NOOR-ee-uh]
    - Duchenne [duh-SHEEN] muscular dystrophy (Correct Answer)

    Posted On: 2018-06-27

  • Identify which of the following factors must be measured in order to apply Archimedes’ principle

    - Temperature of surrounding air
    - Temperature of liquid in which an object is submerged
    - Surrounding air pressure
    - Density of liquid in which an object is submerged (Correct Answer)

    Posted On: 2018-06-26

  • Which of the following occurs for you to witness apartial solar eclipse?

    - The umbra passes over you, but the penumbra does not
    - Both the penumbra and umbra pass over you
    - The penumbra passes over you, but the umbra does not (Correct Answer)
    - Neither the penumbra nor the umbra pass over you

    Posted On: 2018-06-25

  • Which of following is not part of the Pleistocene megafauna?

    - Dire wolf
    - Pterodactyl (Correct Answer)
    - Saber-toothed cat
    - Mammoth

    Posted On: 2018-06-24

  • Which of the following events would lead to increased diversity in a population?

    - Mutation (Correct Answer)
    - Founder effect
    - Bottleneck event
    - Genetic drift

    Posted On: 2018-06-23

  • Your average on your first three math tests was an 84. What is the minimum grade you need on the fourth test to have an average of 88 across all four tests?

    - 90
    - 94
    - 98
    - 100 (Correct Answer)

    Posted On: 2018-06-22

  • A heat engine operates between temperatures of 100 and 400 degrees Celsius. The maximum possible efficiency of the engine is closest to which of the following?

    - 25%
    - 45% (Correct Answer)
    - 55%
    - 75%

    Posted On: 2018-06-21

  • Solar panels derive their power from sunlight. The maximum amount of solar irradiance received at any moment on the surface of the Earth is which of the following?

    - Solar constant, 1,368 watts per meter squared (Correct Answer)
    - Solar variable, 1,268 watts per meter squared
    - Solar declination, 1,368 watts per meter squared
    - Solar azimuth, 999 watts per meter squared

    Posted On: 2018-06-20

  • As the ice freezes around Antarctica in the winter months, what happens to the continent’s area?

    - Increases by half
    - Increases by 75%
    - Doubles (Correct Answer)
    - Triples

    Posted On: 2018-06-19

  • What kind of spectrum would you expect to see when observing a hot gas through a spectrograph?

    - Black body spectrum
    - Emission spectrum (Correct Answer)
    - Absorption spectrum
    - Inverted spectrum

    Posted On: 2018-06-18

  • Which of the following organisms is most closely related to sharks, rays, and skates?

    - Chimaera [ki-MEER-uh] (Correct Answer)
    - Killer whales
    - Leopard seals
    - Baleen whales

    Posted On: 2018-06-17

  • The heat engine utilized in a typical ocean thermal energy conversion system has an efficiency that lies in which of the following ranges?

    - 0-10% (Correct Answer)
    - 20-30%
    - 40-50%
    - 60-70%

    Posted On: 2018-06-16

  • Harmonics, an issue of power quality, causes which of the following effects?

    - Distorts the voltage and current waveforms of a circuit (Correct Answer)
    - Reduction in the source voltage
    - Increase in the source voltage
    - Power interruption for more than one minute

    Posted On: 2018-06-15

  • Worldwide, over 70% of the total length of beaches has retreated at a rate of 10 centimeters per year. Which of the following is primarily responsible for this dramatic change?

    - Increase in shoreline construction
    - Decrease in the number of groins permitted
    - Damming of the world’s rivers (Correct Answer)
    - Increases in ocean acidification

    Posted On: 2018-06-14

  • Which of the following determines the sex of a turtle egg?

    - Temperature of the sand (Correct Answer)
    - Phase of the moon
    - Season of fertilization
    - How many eggs are laid

    Posted On: 2018-06-13

  • Which of the following best classifies iodine?

    - Halogen (Correct Answer)
    - Inert gas
    - Compound
    - Alkali metal

    Posted On: 2018-06-12

  • Which of the following is NOT a process of plate tectonics?

    - Continental drift
    - Seafloor spreading
    - Subduction
    - Upwelling (Correct Answer)

    Posted On: 2018-06-11

  • Non-storm wave action can move fine sand particles in depths of up to how many meters?

    - 10
    - 20 (Correct Answer)
    - 40
    - 80

    Posted On: 2018-06-10

  • How long is an Eon in Geology.

    - A Million Years
    - A Billion Years (Correct Answer)
    - A Trillion Years
    - A Thousand Years

    Posted On: 2018-06-09

  • What fibrous molecule is very common in locations in between cells of the human body?

    - Cellulose
    - Albumin
    - Insulin
    - Collagen (Correct Answer)

    Posted On: 2018-06-08

  • Which of the following household objects is an example of a heat pump?

    - Electric Baseboard Heater
    - Plasma Tv
    - Microwave
    - Refrigerator (Correct Answer)

    Posted On: 2018-06-07

  • Which of the following is NOT true about phase changes in substances?

    - Energy Is Exchanged During A Phase Change
    - Sublimation Is A Type Of Phase Change Involving Solids
    - Freezing Is An Exothermic Phase Change
    - A Phase Change Cannot Be Reversed (Correct Answer)

    Posted On: 2018-06-06

  • Which of the following are the sugar transporting cells of the phloem in flowering plants?

    - Tracheids
    - Collenchyma
    - Vessel Elements
    - Sieve Tube Cells (Correct Answer)

    Posted On: 2018-06-05

  • Which of the following stars would have the hottest surface temperature?

    - Blue Giant (Correct Answer)
    - Red Supergiant
    - Red Dwarf
    - Brown Dwarf

    Posted On: 2018-06-04

  • Which of the following BEST describes the position of a waxing nearly half Moon just after an April sunset in Mississippi?

    - Low In The East
    - Low In The West
    - High In The Southern Sky (Correct Answer)
    - High In The Northern Sky

    Posted On: 2018-06-03

  • Which of the following is NOT true about Earth’s atmosphere?

    - Carbon Monoxide Is Found In Trace Amounts In Earth’S Atmosphere At Sea Level
    - Nitrogen And Oxygen Make Up Nearly 99% Of Earth’S Atmosphere At Sea Level
    - Temperatures In Parts Of The Stratosphere Are Nearly As Warm As They Are On Earth
    - The Tropopause Is Lower At The Equator Than At The North Pole (Correct Answer)

    Posted On: 2018-06-02

  • An alpha particle is made of how many protons and how many neutrons?

    - 2 AND 2 (Correct Answer)
    - 1 AND 1
    - 3 AND 2
    - 2 AND 1

    Posted On: 2018-06-01

  • Which of the following is the BEST description of a colloid?

    - A Homogeneous Mixture Of Uniform Particles In Solution
    - A Mixture Of Different Substances That Never Settle Out Of Solution (Correct Answer)
    - Ionized Particles In Suspension
    - Unfilterable Suspended Solutions

    Posted On: 2018-05-31

  • Which of the following is the BEST description for the location of the human spleen?

    - Lower Right Abdomen Just Above The Hip Bone
    - Upper Right Abdomen Just Under The Lower Right Ribs
    - Lower Left Abdomen Just Above The Hip Bone
    - Upper Left Abdomen Just Under The Lower Left Ribs (Correct Answer)

    Posted On: 2018-05-30

  • Which of the following must occur for total internal reflection to occur?

    - The Angle Of Incidence Equals The Angle Of Reflection
    - Dispersion Of All Wavelengths Of Light
    - The Critical Angle Of Refraction Is Exceeded (Correct Answer)
    - Polarized Light Must Be Used

    Posted On: 2018-05-29

  • Which of the following seismic waves causes rock particles to move back and forth in the same direction as the wave is moving, much like the wave propagation in an outstretched spring that is hit on one end?

    - L-Waves
    - P-Waves (Correct Answer)
    - S-Waves
    - T-Waves

    Posted On: 2018-05-28

  • What type of data ultimately convinced geologists that Wegener’s theory of continental drift was correct?

    - Paleomagnetic Data (Correct Answer)
    - Well-Preserved Dinosaur Fossils In Antarctica
    - Detailed Sonar Imaging Of The Mid-Atlantic Ridge
    - Direct Sampling And Analysis Of Mantle Material

    Posted On: 2018-05-27

  • Which of the following is a high-grade foliated metamorphic rock?

    - Geode
    - Marble
    - Gneiss (Correct Answer)
    - Slate

    Posted On: 2018-05-26

  • Which of the following types of scientists would most likely use interferometry in their experiments?

    - Astronomer. (Correct Answer)
    - Plastics engineer.
    - Chemical engineer.
    - Microbiologist.

    Posted On: 2018-05-25

  • Which of the following is NOT a prime number.

    - 2
    - 5
    - 17
    - 33 (Correct Answer)

    Posted On: 2018-05-24

  • What is the average internal Celsius temperature of the human body?

    - 37 (Correct Answer)
    - 98
    - 56
    - 45

    Posted On: 2018-05-23

  • Which of the following is NOT true of chemical reactions?

    - They are always reversible (Correct Answer)
    - Energy is either absorbed or released
    - A new substance is formed
    - Chemical bonds are broken and formed

    Posted On: 2018-05-22

  • If a car travels at a rate of 50 miles per hour, what is the distance, in miles, traveled in 5 hours?

    - 200
    - 150
    - 400
    - 250 (Correct Answer)

    Posted On: 2018-05-21

  • The transfer of energy from the Sun across space is accomplished primarily by:

    - Conduction
    - Convection
    - Radiation (Correct Answer)
    - Radio waves

    Posted On: 2018-05-20

  • Ultrasonic sound frequencies are typically considered to be?

    - Above 20 hertz
    - Below 20 hertz
    - Above 20 kilohertz (Correct Answer)
    - Above 2,000 hertz

    Posted On: 2018-05-19

  • Which of the following is NOT found in prokaryotes?

    - DNA
    - RNA
    - Ribosomes
    - Golgi (Correct Answer)

    Posted On: 2018-05-18

  • The zodiac is typically considered to be made of how many constellations?

    - 12 (Correct Answer)
    - 15
    - 6
    - 8

    Posted On: 2018-05-17

  • Which of the following is the chief constituent of limestone?

    - Quartz
    - Clay
    - Sand
    - Calcite (Correct Answer)

    Posted On: 2018-05-16

  • Which of the following best describes how stalagmites in caves are formed?

    - Mechanical weathering
    - Chemical weathering (Correct Answer)
    - Melting
    - Decaying

    Posted On: 2018-05-15

  • Which of the following would be the most logical instrument to use when a small amount of suspended particles must be separated from a liquid?

    - pH meter
    - Centrifuge (Correct Answer)
    - Spectrometer
    - Tweezers

    Posted On: 2018-05-14

  • Which of the following is a heterogeneous mixture?

    - 5.0% glucose solution
    - Rubbing alcohol
    - Mixture of hydrogen and oxygen gases
    - Concrete (Correct Answer)

    Posted On: 2018-05-13

  • Which of the following is the location of the human thymus gland?

    - Upper chest (Correct Answer)
    - Inguinal canal
    - Abdomen
    - Brain

    Posted On: 2018-05-12

  • Which of the following is the study of spiders?

    - Arachnology (Correct Answer)
    - Dendrochronology
    - Planktology
    - Lepidopterology

    Posted On: 2018-05-11

  • The most useful unit of concentration in the chemistry lab is?

    - Mole fraction
    - Mass percent
    - Normality
    - Molarity (Correct Answer)

    Posted On: 2018-05-10

  • Which of the following describes the shape of a bacterial pilus?

    - A solid sphere.
    - A cuboidal shaped cell.
    - A thin tube. (Correct Answer)
    - A helical thick solid fiber.

    Posted On: 2018-05-09

  • The presence of which of the following is evidence that 2 valley glaciers have or had at one time joined into a larger glacier?

    - Perpendicular striation pattern.
    - Overlapping end moraines.
    - Medial moraine. (Correct Answer)
    - V-shaped valley.

    Posted On: 2018-05-08

  • Which of the following is NOT a structure found in human cells?

    - Mitochondrion.
    - Cell wall. (Correct Answer)
    - Lysosome.
    - Peroxisome.

    Posted On: 2018-05-07

  • Which of the following does the prefix “photo” (spell
    out the letters p, h, o, t, o ) mean, as in the word photometer?

    - Record (read as: REE-cord).
    - Light. (Correct Answer)
    - Measure.
    - Expose.

    Posted On: 2018-05-06

  • Which of the following events are associated with the highest tides?

    - Spring tides.  (Correct Answer)
    - Neap tides.
    - Slack tides.
    - Ebb tides.

    Posted On: 2018-05-05

  • Kinetic energy of an object is proportional to which of the following?

    - Its velocity.
    - The square of its velocity. (Correct Answer)
    - Its momentum.
    - Its angular momentum.

    Posted On: 2018-05-04

  • The following is a depositional feature formed by a glacier?

    - Arête (read as: ah-RATE).
    - Horn. 
    - Cirque. 
    - Kame (read as: CAME) (Correct Answer)

    Posted On: 2018-05-03

  • In which geologic period did reptiles first appear in Earth’s history?

    - Carboniferous. (Correct Answer)
    - Ordovician.
    - Estacian. 
    - Jurassic.

    Posted On: 2018-05-02

  • Which of the following determines the size of the image formed by a telescope?

    - The focal length of the main lens or mirror. (Correct Answer)
    - The thickness of the lens.
    - The size of the aperture.
    - The size of the mirror.

    Posted On: 2018-05-01

  • Metamorphism transforms limestone into what metamorphic rock?

    - Quartzite.
    - Marble. (Correct Answer)
    - Hornfel.
    - Granite.

    Posted On: 2018-04-30

  • Which of the following has the greatest density?

    - 10 kilogram of pure water.
    - 10 kilogram of aluminum. 
    - 2 kilogram of silver. 
    - 1 kilogram of gold. (Correct Answer)

    Posted On: 2018-04-29

  • Mercury currently has the most identified isotopes, how many?

    - 45 isotopes. (Correct Answer)
    - 115 isotopes.
    - 212 isotopes. 
    - 305 isotopes.

    Posted On: 2018-04-28

  • In which of the following units would capacitance most likely be given?

    - Webers.
    - Farads. (Correct Answer)
    - Teslas.
    - Ohms.

    Posted On: 2018-04-27

  • What is NOT a property of diamonds?

    - Extremely hard.
    - Transparent.
    - Poor thermal conductor. (Correct Answer)
    - Good electrical insulator.

    Posted On: 2018-04-26

  • Arrange the following 3 choices in order of INCREASING mass: largest moon of Saturn; Brown dwarf star; Earth.

    - BROWN DWARF STAR, EARTH, LARGEST MOON OF SATURN.
    - EARTH, LARGEST MOON OF SATURN, BROWN DWARF STAR.
    - LARGEST MOON OF SATURN, EARTH, BROWN DWARF STAR. (Correct Answer)

    Posted On: 2018-04-25

  • Which of the following best explains the benefit of adding a solution of ethylene glycol, or antifreeze, to the radiator of a car?

    - Lowers the freezing point and raises the boiling point. (Correct Answer)
    - Raises the freezing point and raises the boiling point. 
    - Lowers the freezing point and lowers the boiling point. 
    - Raises the freezing point and lowers the boiling point.

    Posted On: 2018-04-24

  • Which of the following has the GREATEST kinetic energy for an object moving in a straight path?

    - A mass of 2 kg with a velocity of 10 meters per second. 
    - A mass of 4 kg with a velocity of 8 meters per second.  (Correct Answer)
    - A mass of 6 kg with a velocity of 6 meters per second. 
    - A mass of 8 kg with a velocity of 4 meters per second.

    Posted On: 2018-04-23

  • If the half-life of a given isotope is 7 days, what fraction of the original isotope will be left after 14 days?

    - 1/2.
    - 1/4. (Correct Answer)
    - 1/16.

    Posted On: 2018-04-22

  • It is 8:55 PM, December 9 in Boston, Massachusetts, which is located at 71º west longitude. What time and day is it in London, England at 0º longitude?

    - 1:55 AM; DECEMBER 10th. (Correct Answer)
    - 11:55 PM; DECEMBER 9th.
    - 2:55 AM; DECEMBER 10th.
    - 12:55 AM; DECEMBER 10th.
    - 12:55 AM; DECEMBER 10th.

    Posted On: 2018-04-21

  • If the cost of electricity is 12-cents per kilowatt hour, how much does it cost to run a 100-watt light bulb for 10 hours?

    - 10 cents.
    - 15 cents.
    - 12 cents. (Correct Answer)
    - 6 cents. 

    Posted On: 2018-04-20

  • Which of the following is the most distinguishing characteristic of all vertebrates adapted to life on land from amphibians?

    - Lack of metamorphosis. 
    - Presence of true kidneys. 
    - Production of amniotic eggs.  (Correct Answer)
    - Presence of a coelom (read as: sil-OHM).

    Posted On: 2018-04-19

  • A balanced coin is flipped once and a fair 6-sided die is rolled once. What is the probability, as a fraction in lowest terms, of obtaining a tail AND a 3?

    - 1/4.
    - 1/2.
    - 1/10.
    - 1/12. (Correct Answer)

    Posted On: 2018-04-18

  • Which of the following is an example of a mountain range that was primarily formed by a process of fault-blocking?

    - The Grand Tetons, Wyoming. (Correct Answer)
    - The Andes Mountains. 
    - The Himalayas.
    - The Hawaiin Islands.

    Posted On: 2018-04-17

  • Which of the following best describes what meteorologists call a mesoscale convective complex?

    - An Alberta clipper.
    - A low-precipitation supercell tornado.  
    - A large cluster of thunderstorms.  (Correct Answer)
    - A widespread area of cool, clear conditions.

    Posted On: 2018-04-16

  • Oftentimes compared to slow-moving toothpaste extruding from a tube, which of the following has formed several times within the crater Mount Saint Helens since its 1980 eruption?

    - Lava domes.   (Correct Answer)
    - Cinder cones. 
    - Flood basalts.  
    - Spatter cones.

    Posted On: 2018-04-15

  • Organelles are most abundant in cells that are producing large amounts of ATP through oxidative metabolism?

    - Smooth ER.  
    - Rough ER.
    - Mitochondria. (Correct Answer)
    - Lysosomes.

    Posted On: 2018-04-14

  • The Sun’s tide-generating force is about?

    - One-half that of the Moon.  (Correct Answer)
    - Twice that of the Moon. 
    - One-fourth that of the Moon. 
    - 4-times that of the Moon.

    Posted On: 2018-04-13

  • Which of the following is present only where benthic organisms reside?

    - Phytoplankton.
    - Zooplankton.
    - Diatoms.
    - Deep sea vents.

    Posted On: 2018-04-12

  • What is overall charge at the top and bottom, respectively, of a towering cumulonimbus cloud during a thunderstorm?

    - Positive, positive. 
    - Positive, negative. (Correct Answer)
    - Negative, positive. 
    - Negative, negative.

    Posted On: 2018-04-11

  • A lightning bolt is seen and its accompanying thunder is heard 15 seconds later the storm is most likely how many miles away?

    - 3 miles. (Correct Answer)
    - 6 miles.
    - 9 miles.
    - 15 miles.

    Posted On: 2018-04-10

  • Multiple Choice What substance was the primary fuel source for NASA space shuttles?

    - Propane.
    - Helium gas.
    - Liquid hydrogen. (Correct Answer)
    - Methane.

    Posted On: 2018-04-09

  • Early astronomers observed lights that wandered among the stars, today we know these are?

    - Sun spots. 
    - Asteroid belts.
    - Constellations. 
    - Planets. (Correct Answer)

    Posted On: 2018-04-08

  • Stars appear to have different colors because they have different?

    - Distances.
    - Ages.
    - Temperatures.  (Correct Answer)
    - Names.

    Posted On: 2018-04-07

  • In what layer of the Earth’s atmosphere does most of our weather occur?

    - Exosphere.
    - Thermosphere.
    - Troposphere. (Correct Answer)
    - Stratosphere.

    Posted On: 2018-04-06

  • In which of the geological time periods, did dinosaurs first appear?

    - Jurassic.
    - Triassic.  (Correct Answer)
    - Cretaceous. 
    - Tertiary.

    Posted On: 2018-04-05

  • Calcium, strontium, and barium are commonly called what kind of elements?

    - Halides.
    - Inert.
    - Alkali metals. 
    - Alkaline earth. (Correct Answer)

    Posted On: 2018-04-04

  • When an airplane’s ailerons move in opposite directions they usually cause a plane to:

    - Pitch.
    - Yaw.
    - Roll. (Correct Answer)
    - Stall.

    Posted On: 2018-04-03

  • Which color is not listed in the visible light spectrum.

    - Yellow.
    - Blue. 
    - Red. 
    - Violet. 
    - Purple. (Correct Answer)

    Posted On: 2018-04-02

  • Bees must collect nectar from approximately how many flowers to make 1 pound of honeycomb?

    - 10,000.
    - 1,000,000.
    - 20,000,000. (Correct Answer)
    - 50,000,000

    Posted On: 2018-04-01

  • A cloud at ground level is called?

    - Low cirrus. 
    - Fog. (Correct Answer)
    - Ground cumulus. 

    Posted On: 2018-03-31

  • Pollination by birds is called?

    - Autogamy.
    - Ornithophily. (Correct Answer)
    - Entomophily.
    - Anemophily.

    Posted On: 2018-03-30

  • The tanning rays of the sun are called?

    - Ultraviolet Rays. (Correct Answer)
    - Gamma Rays.
    - Infrared Rays. 

    Posted On: 2018-03-29

  • How long is an eon in geology?

    - 1,000 years.
    - 1,000,000 years.
    - 1,000,000,000 years. (Correct Answer)
    - 1,000,000,000,000 years.

    Posted On: 2018-03-28

  • Hale-Bopp is classified as what type of Solar System body?

    - Comet. (Correct Answer)
    - Dwarf Planet.
    - Near Earth Object. 
    - Asteroid.

    Posted On: 2018-03-27

  • Name the ship Charles Darwin served on, as a naturalist during a voyage to South America?

    - HMS Victory.
    - HMS Beagle. (Correct Answer)
    - HMS Bounty.

    Posted On: 2018-03-26

  • What was the name of the first US space station?

    - SkyLab. (Correct Answer)
    - International Space Station. 
    - Manned Orbiting Laboratory.

    Posted On: 2018-03-25

  • Who invented the cell phone?

    - Joel Engel.
    - Craig McCaw.
    - Martin Cooper. (Correct Answer)

    Posted On: 2018-03-24

  • Most communications today are based on what invention/patent filed by 30's movie star Hedy Lamar?

    - DMR; Digital Mobile Radio.
    - Shortwave Radio.
    - Spread Spectrum Technology.  (Correct Answer)

    Posted On: 2018-03-23

  • A new type of Aurora just appeared recently over Scotland, what's it called?   

    - Porton Arc.
    - Aurora Australis.
    - Steve. (Correct Answer)

    Posted On: 2018-03-22

  • Who received a U.S. patent for of multi-stage rocket in 1914?

    - Hermann Oberth.
    - Robert Hutchins Goddard. (Correct Answer)
    - Konstantin Eduardovitch Tsiolkovsky.
    - Wernher von Braun.

    Posted On: 2018-03-21

  • What type of species has the longest scientific name in the world (Parastratiosphecomyia stratiosphecomyioides)?

    - African Beetle
    - Indian Fly (Correct Answer)
    - Australian Seahorse
    - Fijian Sea Snail

    Posted On: 2018-03-20

  • How long does light from the sun take to reach earth?

    -

    Approximately 8 Minutes.

    (Correct Answer)
    - Approximately 11 Minutes.
    - Approximately 25 Minutes.

    Posted On: 2018-03-19

  • When diagnosed with ALS at 21, Stephen Hawkin was given a couple of years to live, he outlived the diagnosis by how many years?

    - More than 25 years.
    - More than 30 years.
    - More than 40 years.
    - More than 50 years. (Correct Answer)

    Posted On: 2018-03-18

  • What is the deepest freshwater lake in the world?

    - Lake Tahoe
    - Lake Michigan
    - Lake Baikal (Russia) (Correct Answer)
    - Lake Tanganyika (Africa)

    Posted On: 2018-03-17

  • What is the fastest animal in the world relative to its size?

    -

    Cicindela Hudsoni (Tiger Beetle)


    -

    Paratarsotomus Macropalpis (Mite)

    (Correct Answer)
    -

    Acinonyx jubatus (Cheetah)



    Posted On: 2018-03-16

  • What is the longest river in the world?

    - Amazon (Correct Answer)
    - Nile
    - Mississippi
    - Yangtze

    Posted On: 2018-03-15

  • What is the heaviest, naturally occurring element on earth?

    - Osmium
    - Uranium (Correct Answer)
    - Plutonium

    Posted On: 2018-03-13

  • What is  a Faraday cage?

    - A container that prevents electrical waves or signals from passing through it.   (Correct Answer)
    - A container that eliminates all radio wave frequencies.
    - A cage that prevents microwaves from passing through.

    Posted On: 2018-03-12

  • What is the worlds deadliest spider?

    - Brown Recluse Spider
    - Yellow Sac Spider
    - Funnel Web Spider (Correct Answer)
    - Red Widow Spider

    Posted On: 2018-03-11

  • What flower has the nickname "Corpse Flower"?

    -

    Amorphophallus Titanum

    (Correct Answer)
    - Posidonia
    -

    Rafflesia Arnoldii


    - Malpighiales

    Posted On: 2018-03-10

  • What is the most common type of neurons in humans?

    - Multipolar (Correct Answer)
    - Bipolar
    - Unipolar

    Posted On: 2018-03-09

  • What is the largest moon of the planet Saturn?

    - Pandora
    - Prometheus
    - Titan (Correct Answer)
    - Gollum

    Posted On: 2018-03-08

  • What is the fastest speed ever recorded for a racing drone?

    - 95.5 MPH
    - 125.7 MPH
    - 163.5 MPH (Correct Answer)
    - 200 MPH

    Posted On: 2018-03-07

  • What constitutes absolute zero in chemistry?

    -

    The point where no more heat can be removed from a system.


    -

    Temperature at which a thermodynamic system has the lowest energy.


    -

    -273.15 on the Celsius temperature scale or -459.67 on Fahrenheit scale.


    -

    All of the above are correct.

    (Correct Answer)

    Posted On: 2018-03-06

  • A Bomb Cyclone (Winter Hurricane) occurs in weather when?

    - THe temperature drops 30 degrees in 60 minutes.
    - A low pressure system’s central pressure falls 24 millibars in 24 hours or less. (Correct Answer)
    - A tornado occurs in below freezing temperatures.

    Posted On: 2018-03-05

  • What is the name of the engine on the Falcon Heavy Rocket?

    - Kestrel
    - Draco
    - Merlin (Correct Answer)
    - Raptor

    Posted On: 2018-03-04

  • What is the largest Dinosaur fossil found?

    - Titanosaur Argentinosaurus Huinculensis (Correct Answer)
    - Spinosaurus
    - Sauroposeidon

     



    Posted On: 2018-03-03

  • What is nearest galaxy to the Milky Way?

    - Andromeda (Correct Answer)
    - Starburst
    - Messier 82

    Posted On: 2018-03-02

  • Which type of shark can be found in freshwater rivers?

    - Mako
    - Bull  (Correct Answer)
    - Nurse
    - Hammerhead

    Posted On: 2018-03-01

  • What train system can move at speeds upwards of 700 MPH?

    - Bullet
    - Maglev
    - Hyperloop (Correct Answer)
    - Harmony

    Posted On: 2018-02-28

  • A Newton equals?

    - 10 Joules
    - 1 Apple
    - 100,000 Dynes (Correct Answer)
    - 12 Issacs

    Posted On: 2018-02-27

  • What does a Joule measure?

    - Unit of Work or energy (Correct Answer)
    - Heat
    - Light
    - Electricity

    Posted On: 2018-02-26

  • Binary logic; 0 and 1 = false or true, what logic deals in between 0 and 1?

    - Gray Logic
    - Middle Logic
    - Boolean Logic
    - Fuzzy Logic (Correct Answer)

    Posted On: 2018-02-25

  • What is a never ending pattern called?

    - Symmetry
    - Geometric
    - Fractal (Correct Answer)
    - Neverend

    Posted On: 2018-02-24

  • How old is the Universe?

    - 6.2 billion years
    - 200 million years
    - 6500 years
    - 13.8 billion years (Correct Answer)

    Posted On: 2018-02-23

  • What is the highest suspension bridge in the US?

    - Ambassador Bridge
    - Golden Gate Bridge
    - Royal Gorge Bridge (Correct Answer)
    - Verrazano-Narrows Bridge

    Posted On: 2018-02-22

  • The habitable zone near a star where liquid water might exist is called?

    - Water Zone
    - Ariel Zone
    - Goldilocks Zone (Correct Answer)
    - Livable Zone

    Posted On: 2018-02-21

  • If you drilled a tunnel through the earth and jumped in how long would it take to get to the other side.

    - 14 Hours and 27 Minutes
    - 48 Hours and 37 Minutes
    - 42 Minutes and 12 Seconds (Correct Answer)
    - 1 Hour and 43 Minutes

    Posted On: 2018-02-20

  • How is the Olympic flame lit?

    - Flint and Steel
    - Hand Drill
    - Parabolic Mirror (Correct Answer)
    - Bow Drill

    Posted On: 2018-02-19

  • What is the coolest layer of the sun?

    - Core
    - Convection Zone
    - Corona
    - Photosphere (Correct Answer)
    - Chromosphere

    Posted On: 2018-02-18

  • What is the coldest temperature ever recorded?

    - −128.6°F (Correct Answer)
    - −100.6°F
    - −99.5°F
    - −135.7°F

    Posted On: 2018-02-17

  • Other than the Sun, what is the closest star?

    - Proxima Centauri (Correct Answer)
    - Cassiopeia
    - Sirius
    - Cygni

    Posted On: 2018-02-16

  • What is the name for the study of the geographic distribution of species?

    - Biodiversity
    - Biogeography (Correct Answer)
    - Evolutionary biology
    - Ecology

    Posted On: 2018-02-15

  • What is the fastest moving ocean surface current in the world?

    - Kuroshio Current
    - Agulhas Current
    - Florida Current (Gulf Stream) (Correct Answer)
    - North Equatorial Current
    - South Equatorial Current

    Posted On: 2018-02-14

  • What is the highest horsepower production car in the world?

    - Chevrolet Camaro ZL1
    - Lamborghini Aventador
    - Bugatti Chiron
    - Koenigsegg Regara (Correct Answer)
    - Dodge Demon

    Posted On: 2018-02-13

  • Where is the world's largest tropical rainforest?

    - Southeast Asian Rainforest
    - Amazon Rainforest (Correct Answer)
    - Congo Rainforest
    - Daintree Rainforest

    Posted On: 2018-02-12

  • What year was the modern piano invented?

    - Approx. 1520
    - Approx. 1645
    - Approx. 1700 (Correct Answer)
    - Approx. 1750
    - Approx. 1810

    Posted On: 2018-02-11

  • Where is the world's deepest explored cave?

    - Cehi Cave - Slovenia
    - Kurbera Cave- Abkhazia, Georgia (Correct Answer)
    - Gouffre Mirolda Cave - France
    - Torca del Cerro del Cuevon Cave - Spain
    - Lechuguilla Cave - New Mexico, USA

    Posted On: 2018-02-10

  • What is the softest mineral on earth?

    - Calcite
    - Gypsum
    - Talc (Correct Answer)
    - Quartz

    Posted On: 2018-02-09

  • What is the hottest planet in our solar system?

    - Mercury
    - Venus (Correct Answer)
    - Mars

    Posted On: 2018-02-08

  • What is the maximum altitude that you can legally fly a drone in the United States?

    - 200 ft
    - 400 ft (Correct Answer)
    - 600 ft
    - 1000 ft

    Posted On: 2018-02-07

  • What is the largest ship ever built?

    - Oasis Of The Seas Cruise Ship
    - USS Enterprise Nuclear Aircraft Carrier
    - Q-Max Liquid Gas Carrier Ship
    - Knock Nevis (Mont) Oil Tanker (Correct Answer)

    Posted On: 2018-02-06

  • How many year-round research stations are there in Antarctica?

    - Up to 22 stations
    - Up to 45 stations (Correct Answer)
    - Up to 78 stations
    - Over 100 stations

    Posted On: 2018-02-05

  • What physics principle makes a football pass thrown as a spiral easier to catch?

    - angular momentum (Correct Answer)
    - air resistance
    - parabolic path
    - law of inertia

    Posted On: 2018-02-04

  • Approximately how many hair follicles are on the human body?

    - Approx. 1.5 million
    - Approx. 3 million
    - Approx. 4 million (Correct Answer)
    - Approx. 6 million
    - Approx. 8.5 million

    Posted On: 2018-02-03

  • What is the world's largest bird of prey?

    - Bearded Vulture
    - Andean Condor (Correct Answer)
    - Harpy Eagle
    - Martial Eagle

    Posted On: 2018-02-02

  • How many volts of electricity does an electric eel produce?

    - 12 Volts
    - 125 Volts
    - 360 Volts
    - Over 475 Volts (Correct Answer)

    Posted On: 2018-02-01

  • For radiocarbon dating, what is the half life (rate of decay) for Carbon-14?

    - 1250 Years
    - 3310 Years
    - 5730 Years (Correct Answer)
    - 8060 Years
    - 10000 Years

    Posted On: 2018-01-31

  • What is the fastest growing plant or tree in the world?

    - Algae
    - Wisconsin Fast Plant
    - Bamboo (Correct Answer)
    - Kudzu

    Posted On: 2018-01-30

  • What is largest spider in the world by weight?

    - Brazilian Wandering Spider
    - Hercules Baboon Spider
    - The Goliath Bird-Eating Tarantula (Correct Answer)
    - Colombian Giant Black Tarantula

    Posted On: 2018-01-29

  • What year was the first jet powered aircraft flight?

    - 1935
    - 1939 (Correct Answer)
    - 1942
    - 1944

    Posted On: 2018-01-28

  • What is a planet in our solar system that spins (rotates) clockwise?

    - Earth
    - Saturn
    - Venus (Correct Answer)
    - Neptune

    Posted On: 2018-01-27

  • What is the approximate ratio of bacteria to human cells in the body?

    - 1.3:1 (Correct Answer)
    - 3.5:1
    - 5.2:1
    - 7.5:1
    - 10:1

    Posted On: 2018-01-26

  • Which was the first object-oriented computer programming language?

    - C++
    - Java
    - Simula (Correct Answer)
    - Visual Basic
    - Delphi
    - Smalltalk

    Posted On: 2018-01-25

  • What process in the hydrologic cycle puts soil moisture into the atmosphere?

    - Evaporation
    - Interception
    - Condensation
    - Precipitation
    - Transpiration (Correct Answer)
    - Percolation

    Posted On: 2018-01-24

  • What type of species has the longest scientific name in the world (Parastratiosphecomyia stratiosphecomyioides)?

    - Indian Fly (Correct Answer)
    - African Beetle
    - Fijian Sea Snail
    - Australian Sea Horse

    Posted On: 2018-01-23

  • Where is the world's largest laser located?

    - European X-ray Free Electron Laser - Hamburg, Germany
    - National Ignition Facility - California, USA (Correct Answer)
    - Laser for Fast Ignition Experiments - Osaka, Japan

    Posted On: 2018-01-22

  • What is the highest mountain in the continental United States?

    - Mount Elbert
    - Mount McKinley
    - Mount Whitney (Correct Answer)
    - Mount Rainier

    Posted On: 2018-01-21

  • What is the deepest zone (depth layer) of the ocean called?

    - Epipelagic Zone
    - Mesopelagic Zone
    - Abyssopelagic Zone
    - Hadalpelagic Zone (Correct Answer)
    - Bathypelagic Zone

    Posted On: 2018-01-20

  • What is the largest moon in our solar system?

    - Titan (Saturn)
    - Ganymede (Jupiter) (Correct Answer)
    - Triton (Neptune)
    - Titania (Uranus)

    Posted On: 2018-01-19

  • What speed did the DRL Racer X drone reach in 2017 to set a Guinness World Record?

    - 87.5 mph
    - 112.3 mph
    - 163.5 mph (Correct Answer)
    - 176.2 mph

    Posted On: 2018-01-18

  • What year was the Serson's Speculum (whirling speculum), a sextant and earliest gyroscopic device, invented?

    - 1743 (Correct Answer)
    - 1817
    - 1852

    Posted On: 2018-01-17

  • Where is the largest radio telescope in the world?

    - Arecibo Observatory (Puerto Rico)
    - Effelsberg Radio Telescope (Germany)
    - Aperture Spherical Telescope (China) (Correct Answer)

    Posted On: 2018-01-16

  • Which US state has, on average, the highest number of tornadoes per year?

    - Kansas
    - Texas (Correct Answer)
    - Oklahoma
    - Florida
    - Nebraska

    Posted On: 2018-01-15

  • How many times does skin completely replace itself over the average human's lifetime?

    - 250
    - 500
    - 900 (Correct Answer)
    - 1300
    - 2600

    Posted On: 2018-01-14

  • What is the name of the most recent mass extinction period?

    - Permian-Triassic extinction
    - Cretaceous-Paleogene extinction (Correct Answer)
    - Triassic-Jurassic extinction
    - Late Devonian Extinction
    - Ordovician-Silurian Extinction

    Posted On: 2018-01-13

  • How old are the vast majority of the hydrogen atoms in your body?

    - They are the same age as you.
    - Approximately 3.8 Million Years Old.
    - Approximately 13.7 Billion Years Old. (Correct Answer)

    Posted On: 2018-01-12

  • What planet has the largest volcano in our solar system?

    - Mars (Correct Answer)
    - Earth
    - Venus
    - Jupiter

    Posted On: 2018-01-11

  • Which famous scientist said ..."No employment can be managed without arithmetic, no mechanical invention without geometry"...?

    - Isaac Newton
    - Benjamin Franklin (Correct Answer)
    - Johannes Kepler

    Posted On: 2018-01-10

  • Approximately how much salt (NaCl) is in the average adult human body?

    - 1/4 lb
    - 1/3 lb
    - 1/2 lb (Correct Answer)

    Posted On: 2018-01-09

  • What percentage of natural gas production in the US comes from hydraulic fracturing (fracking)?

    - 23%
    - 44%
    - 67% (Correct Answer)
    - 82%

    Posted On: 2018-01-08

  • What is the average length of a lightning strike? (in miles)

    - 3.5 miles
    - 6.0 miles (Correct Answer)
    - 8.5 miles

    Posted On: 2018-01-07

  • Who sketched the first humanoid robot?

    - Nikola Tesla
    - Leonardo Da Vinci (Correct Answer)
    - Isaac Newton

    Posted On: 2018-01-06

  • Topspin and sidespin in ball games such as tennis are what type of physics phenomena?

    - Coanda Effect
    - Magnus Effect (Correct Answer)
    - Coriolis Effect

    Posted On: 2018-01-05

  • Where was the heaviest hailstone ever recorded?

    - South Dakota
    - Nebraska
    - Bangladesh (Correct Answer)

    Posted On: 2018-01-04

  • How long does it take for a blood cell to travel through your entire body?

    - 30 seconds
    - 60 seconds (Correct Answer)
    - 90 seconds
    - 120 seconds

    Posted On: 2018-01-03

  • Who first proposed that the universe is expanding?

    - Georges Lemaitre (Correct Answer)
    - Edwin Hubble
    - Johannes Kepler

    Posted On: 2018-01-02

  • Which of the following elements is not in a liquid state at room temperature?

    - Bromine
    - Mercury
    - Gallium (Correct Answer)

    Posted On: 2018-01-01

  • What year was underwater sonar invented?

    - 1898
    - 1906 (Correct Answer)
    - 1914

    Posted On: 2017-12-31

  • Who is credited as the inventor of the telescope?

    - Galileo Galilei
    - Jacob Metius
    - Hans Lippershey (Correct Answer)

    Posted On: 2017-12-30

  • What year was nuclear fission discovered?

    - 1933
    - 1938 (Correct Answer)
    - 1942

    Posted On: 2017-12-29

  • How many miles is the diameter of the Large Haldron Collider (particle accelerator)?

    - 8 Miles
    - 13 Miles
    - 17 Miles (Correct Answer)
    - 23 Miles

    Posted On: 2017-12-28

  • What is the largest living organism on earth?

    - honey fungus (oregon) (Correct Answer)
    - pando tree colony (utah)
    - great barrier reef (australia)

    Posted On: 2017-12-27

  • How fast does light travel in the vacuum of space?

    - 78,912 miles per second
    - 127,820 miles per second
    - 186,282 miles per second (Correct Answer)

    Posted On: 2017-12-26

  • Which country has the largest herd of reindeer?

    - United States
    - Canada
    - Russia (Correct Answer)

    Posted On: 2017-12-25

  • How large is the Ross ice shelf in Antarctica?

    - 79,000 sq miles
    - 188,000 sq miles (Correct Answer)
    - 264,000 sq miles

    Posted On: 2017-12-24

  • Who invented the windshield wiper?

    - Hedy Lamarr
    - Mary Anderson (Correct Answer)
    - Marion Donovan

    Posted On: 2017-12-23

  • What is the name of a one thousand sided shape?

    - chiliagon (Correct Answer)
    - dodecahedron
    - icosahedron

    Posted On: 2017-12-22

  • Which country has the world's fastest computer?

    - Japan
    - United States
    - China (Correct Answer)

    Posted On: 2017-12-21

  • Who invented the electron microscope?

    - Max Knoll (Correct Answer)
    - Thomas Edison
    - George Eastman

    Posted On: 2017-12-20

  • What is the largest island in the world? (that is not a continent)

    - Borneo
    - Greenland (Correct Answer)
    - Great Britain

    Posted On: 2017-12-19

  • Where is the world's tallest building?

    - Dubai (Correct Answer)
    - Shanghai
    - New York

    Posted On: 2017-12-18

  • Where was the hottest temperature ever recorded on earth's surface?

    - Death Valley, CA, USA (Correct Answer)
    - El Azizia, Libya
    - Mitribah, Kuwait

    Posted On: 2017-12-17

  • Where is the oldest, free-standing, man-made building in the world?

    - Knap of Howar, Scotland
    - Barnenez, France (Correct Answer)
    - Sechin Bajo, Peru

    Posted On: 2017-12-16

  • How long did it take to build the great wall of China?

    - 150 years
    - 200 years (Correct Answer)
    - 250 years

    Posted On: 2017-12-15

  • What is the heaviest, naturally occurring element on earth?

    - Osmium
    - Plutonium
    - Uranium (Correct Answer)

    Posted On: 2017-12-14

  • What is a geometric figure that has infinite surface area but finite volume?

    - Enneagram
    - Gabriel's Horn (Correct Answer)
    - Vesica Piscis

    Posted On: 2017-12-13

  • Who is considered the father of modern mathematics?

    - Rene Descartes (Correct Answer)
    - Thales of Miletus
    - Piero della Francesca

    Posted On: 2017-12-12

  • How long does light from the sun take to reach earth?

    - Approximately 5 minutes
    - Approximately 8 minutes (Correct Answer)
    - Approximately 11 minutes

    Posted On: 2017-12-11

  • What is the study of infectious diseases called?

    - Physiology
    - Epidemiology (Correct Answer)
    - Immunology

    Posted On: 2017-12-10

  • Where is the highest annual rainfall in the world?

    - Mawsynram, Meghalaya, India (Correct Answer)
    - Debundscha, Cameroon, Africa
    - Mt. Waialeale, Kauai, Hawaii, USA

    Posted On: 2017-12-09

  • What is the longest living animal species on earth?

    - Giant Tortoise
    - Greenland Shark
    - Turritopsis Jellyfish (Correct Answer)

    Posted On: 2017-12-08

  • Where was the coldest temperature on earth recorded?

    - Greenland
    - Russia
    - Antartica (Correct Answer)

    Posted On: 2017-12-07

  • What does the mathametical term 'Calculus' mean in greek?

    - Small Numbers
    - Small Pebbles (Correct Answer)
    - Small Stars

    Posted On: 2017-12-06

  • What is the most populated city in the world?

    - Shanghai, China
    - Mexico City, Mexico
    - Tokyo, Japan (Correct Answer)

    Posted On: 2017-12-05

  • How many species of starfish are there in the world?

    - 700
    - 1300
    - 2000 (Correct Answer)

    Posted On: 2017-12-04

  • What is the study of the evolution of the universe called?

    - Physical Cosmology (Correct Answer)
    - Astronomy
    - Astrophysics

    Posted On: 2017-12-03

  • How many moons does Saturn have?

    - 37
    - 62 (Correct Answer)
    - 79

    Posted On: 2017-12-02

  • Who said ... "The human foot is a masterpiece of engineering and a work of art"?

    - Leonardo da Vinci (Correct Answer)
    - Albert Einstein
    - C. Everett Koop

    Posted On: 2017-12-01

  • How many elements are in the periodic table?

    - 118 (Correct Answer)
    - 119
    - 120

    Posted On: 2017-11-30

  • What is the most venomous snake in the world?

    - King Cobra
    - Boomslang
    - Belcher's Sea Snake (Correct Answer)

    Posted On: 2017-11-29

  • What year was the Polio vaccine discovered?

    - 1950
    - 1953 (Correct Answer)
    - 1956

    Posted On: 2017-11-28

  • What is the longest river in the world?

    - Yangtze
    - Amazon (Correct Answer)
    - Nile

    Posted On: 2017-11-27

  • What is the fastest animal in the world relative to its size?

    - Cicindela hudsoni (Tiger Beetle)
    - Paratarsotomus macropalpis (Mite) (Correct Answer)
    - Acinonyx jubatus (Cheetah)

    Posted On: 2017-11-26

  • What is the lowest barometric pressure ever recorded?

    - 650 millibar (19.19 inches)
    - 795 millibar (23.47 inches)
    - 870 millibar (25.69 inches) (Correct Answer)

    Posted On: 2017-11-25

  • Which amino acid, found in turkey, is associated with causing sleepiness?

    - tryptophan (Correct Answer)
    - tyrosine
    - threonine

    Posted On: 2017-11-24

  • What is the minimum internal temperature for a cooked Thanksgiving turkey?

    - 130 F
    - 165 F (Correct Answer)
    - 180 F

    Posted On: 2017-11-23

  • What is the scientific name for the blue whale?

    - Eschrichtius robustus
    - Balaenoptera musculus (Correct Answer)
    - Carcharodon carcharias

    Posted On: 2017-11-22

  • How many times can a hummingbird flap its wings per second?

    - 40
    - 70 (Correct Answer)
    - 105

    Posted On: 2018-03-14

  • Where was the largest tsunami ever recorded?

    - Lituya Bay, AK, United States (Correct Answer)
    - Miyako, Japan
    - Tumaco, Colombia

    Posted On: 2017-11-20

  • Which type of shark can be found in freshwater rivers?

    - Mako Shark
    - Bull Shark (Correct Answer)
    - Nurse Snark

    Posted On: 2017-11-19

  • Which type of fault is the San Andreas fault in California?

    - strike-slip (transcurrent) (Correct Answer)
    - normal
    - thrust (reverse)

    Posted On: 2017-11-18

  • What is absolute zero in chemistry?

    - The point where no more heat can be removed from a system.
    - Temperature at which a thermodynamic system has the lowest energy.
    - -273.15 on the Celsius temperature scale or -459.67 on Fahrenheit scale.
    - All of the above are correct. (Correct Answer)
    - None of the above are correct.

    Posted On: 2017-11-17

  • Which answer best defines inertia in physics?

    - The speed of an object at a given direction.
    - The rate of change of velocity of an object over time.
    - An object will continue in its existing state unless acted upon by external force. (Correct Answer)

    Posted On: 2017-11-16

  • What is the smallest bone in the human body?

    - Malleus
    - Incus
    - Stapes (Correct Answer)

    Posted On: 2017-11-15

  • What is the deepest freshwater lake in the world?

    - Lake Baikal (Russia) (Correct Answer)
    - Lake Tahoe (United States)
    - Lake Tanganyika (Africa)

    Posted On: 2017-11-14

  • What does "CAD" stand for in engineering software?

    - Computer Assisted Drafting
    - Computer Aided Design (Correct Answer)
    - Correct Angle Direction

    Posted On: 2017-11-13

  • What is the flower with the world's largest bloom?

    - Amorphophallus titanum
    - Posidonia
    - Rafflesia arnoldii (Correct Answer)

    Posted On: 2017-11-12

  • What is the most common type of neurons in humans?

    - Multipolar neurons (Correct Answer)
    - Bipolar neurons
    - Unipolar nuerons

    Posted On: 2017-11-11

  • What is nearest galaxy to the Milky Way (our galaxy)?

    - Andromeda (Correct Answer)
    - Starburst
    - Messier 82

    Posted On: 2017-11-10

  • What is an exothermic reaction?

    - Chemical reaction or process that absorbs energy (usually heat).
    - Chemical reaction that releases energy by light or heat. (Correct Answer)
    - Chemical reaction where no energy is released or absorbed.

    Posted On: 2017-11-09

  • What is the most abundant element in the earth's crust?

    - Silicon
    - Carbon
    - Oxygen (Correct Answer)
    - Nitrogen

    Posted On: 2017-11-08

  • What is Zoology?

    - The scientific study of plants, including their physiology, structure, genetics, ecology, distribution, classification, and economic importance.
    - The scientific study of the behavior, structure, physiology, classification, and distribution of animals. (Correct Answer)
    - The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.

    Posted On: 2017-11-07

  • What is the universal solvent?

    - Acetone
    - Water (Correct Answer)
    - Alcohol

    Posted On: 2017-11-06

  • How many milliliters in a gallon?

    - 3785.41 (Correct Answer)
    - 3785.22
    - 3780.40

    Posted On: 2017-11-03

  • What is the largest moon of the planet Saturn?

    - Pandora
    - Titan (Correct Answer)
    - Hyperion
    - Prometheus

    Posted On: 2018-01-05

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