Quiz  /  Electric Energy Generation Utilization and Conservation Class 8...

  • 1. 
    As an object falls its __________ energy decreases and its kinetic energy increases

  • potential
  • chemical
  • thermal
  • electric

  • 2. 
    Which is an example of a single energy transformation?

  • A toaster converts electrical to thermal energy
  • A match converts mechanical to thermal to electromagnetic
  • A biker converts chemical to mechanical to thermal
  • A car converts chemical to thermal to mechanical

  • 3. 
    What kind of energy in the sun transforms into electromagnetic energy?

  • nuclear
  • thermal
  • electric
  • chemical

  • 4. 
    According to the Law of Conservation of Energy, when one form of energy is transformed into another, __________ energy is lost in the process

  • no
  • some
  • all
  • None of these

  • 5. 
    _________ CANNOT be created or destroyed

  • energy
  • transformation
  • motion
  • pendulums

  • 6. 
    Whenever a moving object experiences friction, some of its kinetic energy is transformed into __________ energy.

  • thermal
  • electrical
  • nuclear
  • mechanical

  • 7. 
    A pendulum has the most kinetic energy when?

  • at the top of its swing
  • at the bottom of its swing

  • 8. 
    How are different forms of energy related?

  • they can all be transformed into other forms of energy
  • none of them can be transformed into other forms of energy
  • they can be created
  • they can be destroyed

  • 9. 
    What is an example of multiple energy transformations?

  • Your body transforms chemical to thermal
  • Your body transforms chemical to mechanical
  • a flashlight converts chemical energy in batteries to electrical to electromagnetic energy in light
  • a phone converts electrical to electromagnetic

  • 10. 
    A change from one form of energy to another

  • energy conservation
  • energy transformation
  • potential energy
  • kinetic energy

  • 11. 
    What happens to the magnetic potential energy when the same poles are far apart?

  • increases
  • decreases
  • stays the same
  • All of above

  • 12. 
    What will happen to the potential energy of the magnets as the N and S get close?

  • increase
  • decrease
  • stay the same
  • there is none

  • 13. 
    What will happen to the magnetic potential energy of the magnets when the N and N get close?

  • increases
  • decreases
  • stays the same
  • None of these

  • 14. 
    If these two magnets with opposite poles are far apart, what happens to their potential energy?

  • increases
  • decreases
  • stays the same
  • None of these

  • 15. 
    If you were to push these positive same charged particles together, do they have more or less electrical potential energy?

  • more
  • less
  • the same as far apart

  • 16. 
    Which of these magnet pairs has the MOST magnetic potential energy?

  • the N/S at the top because they are close
  • the S/S at the bottom because they are close
  • they both have the same amount
  • All of above

  • 17. 
    When these opposite charges get closer, what happens to their electrical potential energy?

  • increases
  • decreases
  • stays the same
  • All of above

  • 18. 
    These opposite charges are far apart. What happens to the electrical potential energy when opposite charges are far apart?

  • increases
  • decreases
  • stays the same

  • 19. 
    What is the electrical potential energy like when these same charges are far apart?

  • high
  • low
  • the same as when they are close
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