Energy

3. energy cannot be created or destroyed it can only change forms
4. the ability to do work
5. the transfer of energy as heat by the movement of a liquid or gas
7. the number of waves that pass a point in a given amount of time, usually one second
10. the time required for identical parts of consecutive waves to pass a given point
11. when energy changes from one form to another
13. equal to the amount of energy needed to raise the temperature of 1 g of water by 1 degree C
15. a measure of how far particles in the medium move from their rest position
18. vibrations of electric and magnetic fields
20. the speed that waves travel depends n the properties of the medium
21. a material that is a poor conductor of energy as heat
22. the energy transferred from an object at a higher temperature to an object at a lower temperature

1. the total kinetic energy of all of the particles in a substance
2. the rate at which work is done
3. particles move back and forth in the same direction that the wave travels
6. waves that require a medium
8. particles move perpendicularly to the direction the wave travels
9. a material that transfers heat as energy very well
12. the ratio of useful output energy to input energy
13. the transfer of energy as heat through matter by direct contact
14. the transfer of energy by electromagnetic waves
16. the use of force to move an object some distance
17. the distance from any point on a wave to the next identical point on the same wave
19. the material through which a wave can travel