Across
- 3. are the part of the wave were the wave particles are furthest apart
- 5. when things are pressed together
- 6. in the form of a liquid,gas,or solid to pass through
- 9. or the way waves travel
- 10. or the absence of matter
Down
- 1. when something moves fast
- 2. the highness or lowness of sound
- 4. also a compression wave
- 7. the ability to do work
- 8. we hear it everyday