Sound wave

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Across
  1. 4. more frequency = ... (No space)
  2. 5. the measure of the height of the wave.
  3. 7. what amplitude relates to?
  4. 10. higher amplitude = ...
  5. 11. the place where sound cannot be heard or travel
  6. 13. minimum hertz human can hear ((number)hz)
  7. 15. what frequency relates to?
Down
  1. 1. the number of times per second that a sound pressure wave repeats itself.
  2. 2. unit of amplitude
  3. 3. a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
  4. 6. where sound can travel
  5. 8. where the sound wave can travel the fastest
  6. 9. the unit of frequency
  7. 12. maximum hertz human can hear ((number)khz)
  8. 14. where the sound wave can travel the slowest