Across
- 1. sound can't travel through it
- 5. how high or low a sound is
- 6. what is another word for "longitudinal wave"?
- 8. what type of wave is sound?
- 10. areas where the particles are spread apart
Down
- 2. areas where the particle are close together
- 3. what a wave travels through (solid, liquid, gas)
- 4. to move back and forth quickly
- 7. can cause change
- 9. energy produced by vibrations