Sound

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Across
  1. 3. Sound is a form of ___.
  2. 6. Irregular and soft surfaces ___ sound.
  3. 8. Sound needs a ___ to travel.
  4. 11. Sound waves are called ___ (compression) waves.
  5. 12. ___ is how volume is measured.
  6. 14. The greater the amplitude, the sound will be ___.
  7. 15. A medium is a solid, ___, or gas.
  8. 16. The ___ the frequency, the lower the pitch.
  9. 18. Can sound travel in a vacuum?
  10. 19. Sound travels slowest through ___.
Down
  1. 1. The higher the frequency, the ___ the pitch.
  2. 2. Sound travels faster in ___ temperatures.
  3. 4. ___ is the number of wavelengths in a specific time.
  4. 5. ___ is when molecules of the wave are pushed together.
  5. 6. ___ is the amount of energy in a compression wave. It changes the intensity and volume.
  6. 7. ___ is slower than light.
  7. 9. ___ happens when an air molecule goes back and forth.
  8. 10. ___ is measured from 2 compression or 2 rarefactions.
  9. 13. Sound travels fastest through ___.
  10. 17. When molecules of a sound wave are apart it's called ___.