Test 2

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Across
  1. 8. the instrument to see the sound wave
  2. 9. the height of the crest that shows maximum displacement from its rest position
  3. 10. ear canal known as the ... ear
  4. 11. this animal detect vibration by its songs
  5. 12. this animal detect vibration by its lower jaw bone
Down
  1. 1. the movement is backward and forward
  2. 2. the distance between 2 troughs
  3. 3. in a jar the sound of a bell becomes
  4. 4. sound wave move fastest through
  5. 5. sound wave cannot travel through
  6. 6. the ear damage
  7. 7. the number of waves per second