Energy and Motion

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Across
  1. 2. A disturbance that transfers energy from one place to another
  2. 3. What the universe is made of
  3. 6. A force caused by things rubbing against each other
  4. 8. The ability to do work
  5. 11. Push or pull on an object
  6. 12. A wave that only goes side to side
  7. 13. The distance between waves
  8. 14. The strength of a wave, or the wave's height or noise level
  9. 18. Stored energy
  10. 20. You CAN see through it
  11. 21. The number of waves per period of time, changes how high or low the sound is
Down
  1. 1. A wave that CAN travel through a vacuum
  2. 4. The bottom of a wave
  3. 5. Energy of motion
  4. 7. You can KIND OF see through it
  5. 9. A wave that CAN'T travel through a vacuum
  6. 10. A wave that goes up and down and side to side
  7. 15. An object in motion stays in motion, an object at rest stays at rest
  8. 16. A lack of matter (in space)
  9. 17. A force that pulls things towards the center of the Earth
  10. 19. You CAN'T see through it
  11. 22. The top of a wave