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