Across
- 4. energy cannot be created or destroyed
- 6. Sound travels faster in ____________temperatures.
- 7. Sound travels fastest through
- 8. The ratio of the amount of energy wasted
- 9. the rate at which work is done, measured in Watts
- 11. Sound travels slowest through
- 13. The back and forth motion of an object
- 14. Units of energy are measured in
- 15. A source of energy that has a finite supply
Down
- 1. old unit for energy
- 2. The ability to do work, measured in joules
- 3. change of one form of energy to another
- 5. The number of crests or troughs per second
- 10. Energy, reproduced faster than it is used up
- 12. When something useful is being done with the energy
- 13. ________is the loudness of a sound