Sound

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Across
  1. 2. Wave sound vibrations (pictures)
  2. 3. when sound bounces back
  3. 7. material sound travels through
  4. 9. crest to crest of wave
  5. 11. back-and-forth movement
  6. 12. loudness of sound
  7. 13. speed something vibrates
  8. 15. unit of frequency
Down
  1. 1. Ear Don't stick stuff in this (ear)
  2. 4. Ear You can see outside of head (ear)
  3. 5. how stretch something is
  4. 6. high or low a sound is
  5. 8. makes music
  6. 10. to make sound louder
  7. 14. this is power