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