Science Final Exam 20-21
  • 1. Which of the following is an artificial light source?
A) Rocket
B) Moon
C) Sun
D) Light Bulb
  • 2. Why does refraction occur?
A) Different materials physically twist light around.
B) Light from different sources travels at different rates
C) Different colors of light travel at different speeds.
D) Light travels through different materials at different speeds
  • 3. When you look at your teacher's face, how can you see it?
A) Her face emits electromagnetic radiation
B) Light reflects off of her face
C) Her face emanates light.
D) Light refracts through her face
  • 4. Light can behave as both a ______ and a _______.
A) Natural source; unnatural source
B) Refraction; reflection
C) Ray; beam
D) Wave; particle
  • 5. What is matter? Choose the best answer.
A) Anything that takes up space
B) Anything that is solid
C) Anything that can be seen
D) Anything that has a fixed volume
  • 6. What happens to the chemical structure of water when it changes state?
A) Water molecules harden into ice molecules
B) Nothing happens to the chemical structure
C) Water molecules break apart to form individual atoms.
D) Water molecules melt into gas molecules
  • 7. In what way are liquids different from solids?
A) Liquid molecules are lighter than solid molecules
B) Liquids don't have a fixed shape; solids do
C) Liquids are made of atoms; solids are made of molecules
D) Liquids are always denser than solids.
  • 8. What will happen if you keep increasing the temperature of a liquid?
A) It will transpire
B) It will solidify
C) It will boil and become a gas
D) It will remain a liquid
  • 9. Water's chemical formula is "H2O." What does this mean?
A) Water is composed of hydrogen molecules and oxygen molecules
B) A gram of water contains 20 hydrogen atoms
C) Each water molecule contains two hydrogen atoms and one oxygen atom
D) Water molecules cannot be split into smaller pieces
  • 10. What do lightning and stars have in common?
A) Both have a fixed volume
B) Both contain plasma
C) Both contain all three states of matter
D) Both have no electrical charge
  • 11. What is the basic shape of a liquid?
A) A canyon ball
B) Whatever shape its container is
C) A cube
D) A Sphere
  • 12. How can you remove energy from matter?
A) By increasing its volume
B) By lowering its temperature
C) By increasing its pressure
D) By boiling it
  • 13. Where would you find a Bose-Einstein condensate?
A) At the North Pole
B) In Wakanda
C) In a Space Mountain
D) In a science lab
  • 14. Gases have a tendency to expand. What's the best synonym for "expand?"
A) Crash
B) Collide
C) Spread out
D) Work
  • 15. What is energy? Choose the best answer.
A) Any object in motion.
B) Anything that travels in the form of a wave.
C) Anything that makes matter move or change.
D) Anything that radiates light or heat
  • 16. Which of these objects has kinetic energy?
A) A ball moving through the air.
B) A ball sitting on a table
C) A ball buried underground.
D) A ball sitting on the edge of a cliff
  • 17. What is the difference between kinetic energy and potential energy?
A) Kinetic energy has to do with chemistry; potential energy has to do with physics
B) Potential energy has to do with chemistry; kinetic energy has to do with physics.
C) Potential energy is the energy of objects at rest; kinetic energy is the energy of objects in motion.
D) Kinetic energy is the energy of objects at rest; potential energy is the energy of objects in motion.
  • 18. Which of the following objects has the most potential energy?
A) A ball sitting on a table
B) A ball that's been thrown into the air
C) A ball resting on the ground
D) A ball sitting on a mountaintop
  • 19. Which of the following terms is synonymous with potential energy?
A) Motion energy
B) Light energy
C) Kinetic energy
D) Stored energy
  • 20. What would happen if you didn't have chemical energy in your body? Choose the best answer.
A) You wouldn't be able to move
B) You wouldn´t be able to fly
C) You wouldn't be able to sleep
D) You wouldn't be able to think
  • 21. What is the primary source of all light energy on earth?
A) A Lightning
B) A Thunder
C) The Sun
D) The Moon
  • 22. Which of the following is an opinion about energy?
A) Kinetic energy is the energy of motion
B) Solar energy can be used to power people's homes
C) Power plants and batteries supply us with electrical energy
D) Chemical energy is the most important source of energy
  • 23. What do wind and moving water have in common?
A) They both have nuclear energy
B) They both have light energy.
C) They both have chemical energy
D) They both have mechanical energy.
  • 24. How is nuclear energy released?
A) By moving turbines
B) By atoms fusing together or splitting apart
C) By burning fuel
D) By chemicals mixing
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