Energy 2

Card Set Information

Energy 2
2011-11-07 20:23:27

Test thursday
Show Answers:

  1. What is kinetic energy?
    Kinetic energy is energy an object has due to its motion. If an object isn't moving it doesn't have kinetic energy.
  2. Kinetic energy and speed:
    The faster something goes, the more kinetic energy the object has.
  3. Kinetic energy and mass:
    Kinetic energy increases as the mass of something increases.
  4. What is potential energy?
    Potential energy is energy stored in a object in a object because of its position. The higher the object is the more potential energy it has.
  5. What is chemical energy?
    Chemical energy is energy stored in an object and released when, for example, wood burns or another type of chemical reaction occurs.
  6. What is thermal energy?
    thermal energy increases as the temperature increases. For example, a cup of hot chocolate has more thermal energy than a cup of water
  7. What kind of energy does your body produce and how?
    Your body continuously produces thermal energy because of chemical reactions in your cells.
  8. What is one way thermal energy is released?
    Thermal energy is released by chemical reaction, which comes from chemical energy. (Eleanor, check to make sure this one is right.)
  9. What is one way that energy is stored.
    Energy stored in chemical bonds often contains chemical bonds with sugar.
  10. What are chemicals made of?
    Chemicals are made of atoms.
  11. What happens to an object that has absorbed light energy?
    An object that has absorbed light energy transforms into thermal energy.
  12. What is a household example of electrical energy?
    Electric stoves have coils that heat up when you turn them up. They begin to grow red from electrical energy.
  13. What happens when chemicals are broken apart?
    Chemicals are broken apart and new bonds are made which releases more energy.
  14. Electrical energy carries. . .
    Electrical energy carries negative and positive charges.
  15. What is lightning?
    Lightning is most commonly seen in the form of electricty. Lightning comes from an unequal distribution of electricity.
  16. What are three forms of lightning?
    Cloud to cloud, surface to cloud, and cloud to surface.
  17. What kind of currents to batteries and outlets have?
    Batteries are direct currents (DC) because of the positive to negative; and outlets are alternating currents (AC)
  18. How is nuclear energy formed?
    Nuclear energy is formed when the nuclei is split or fused.
  19. What happens when the nucleus is split?
    Huge amounts of energy are released when the nucleus (proton and neutron) is split.
  20. How is energy released from the sun?
    Much of the energy given off by the sun are fusion reactions.
  21. What is light energy?
    Light energy--bright or dull--electromagnetic energy that one can see.