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