Across
- 2. sound doesn't travel through this
- 5. example of high frequency
- 7. has to travel through a medium
- 9. when air particles are closet together
- 10. sound can't pass through this
Down
- 1. when air particles are farthest apart.
- 3. sound vibrations
- 4. pitch more waves
- 6. pitch less waves
- 8. example of low frequency