Science Final Exam 20-21
  • 1. Which of the following is an artificial light source?
A) Rocket
B) Sun
C) Moon
D) Light Bulb
  • 2. Why does refraction occur?
A) Different colors of light travel at different speeds.
B) Light travels through different materials at different speeds
C) Light from different sources travels at different rates
D) Different materials physically twist light around.
  • 3. When you look at your teacher's face, how can you see it?
A) Light reflects off of her face
B) Her face emits electromagnetic radiation
C) Her face emanates light.
D) Light refracts through her face
  • 4. Light can behave as both a ______ and a _______.
A) Refraction; reflection
B) Natural source; unnatural source
C) Ray; beam
D) Wave; particle
  • 5. What is matter? Choose the best answer.
A) Anything that can be seen
B) Anything that has a fixed volume
C) Anything that is solid
D) Anything that takes up space
  • 6. What happens to the chemical structure of water when it changes state?
A) Water molecules harden into ice molecules
B) Water molecules melt into gas molecules
C) Water molecules break apart to form individual atoms.
D) Nothing happens to the chemical structure
  • 7. In what way are liquids different from solids?
A) Liquids are made of atoms; solids are made of molecules
B) Liquid molecules are lighter than solid molecules
C) Liquids don't have a fixed shape; solids do
D) Liquids are always denser than solids.
  • 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) A gram of water contains 20 hydrogen atoms
B) Water is composed of hydrogen molecules and oxygen molecules
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 contain plasma
B) Both have no electrical charge
C) Both contain all three states of matter
D) Both have a fixed volume
  • 11. What is the basic shape of a liquid?
A) A cube
B) A canyon ball
C) A Sphere
D) Whatever shape its container is
  • 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) In Wakanda
B) In a Space Mountain
C) At the North Pole
D) In a science lab
  • 14. Gases have a tendency to expand. What's the best synonym for "expand?"
A) Spread out
B) Crash
C) Collide
D) Work
  • 15. What is energy? Choose the best answer.
A) Anything that travels in the form of a wave.
B) Any object in motion.
C) Anything that radiates light or heat
D) Anything that makes matter move or change.
  • 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) Potential energy has to do with chemistry; kinetic energy has to do with physics.
B) Kinetic energy is the energy of objects at rest; potential energy is the energy of objects in motion.
C) Kinetic energy has to do with chemistry; potential energy has to do with physics
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 resting on the ground
D) A ball that's been thrown into the air
  • 19. Which of the following terms is synonymous with potential energy?
A) Kinetic energy
B) Motion energy
C) Stored 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 think
B) You wouldn't be able to move
C) You wouldn't be able to sleep
D) You wouldn´t be able to fly
  • 21. What is the primary source of all light energy on earth?
A) The Sun
B) A Thunder
C) A Lightning
D) The Moon
  • 22. Which of the following is an opinion about energy?
A) Chemical energy is the most important source of energy
B) Solar energy can be used to power people's homes
C) Power plants and batteries supply us with electrical energy
D) Kinetic energy is the energy of motion
  • 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 chemicals mixing
B) By atoms fusing together or splitting apart
C) By moving turbines
D) By burning fuel
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