Across
- 3. particles travel parallel
- 4. middle line
- 7. number of crests in a second
- 10. all atoms are squished
- 11. transmits energy through matter and space
- 13. particles travel in a perpendicular motion
Down
- 1. the matter a wave is traveling through
- 2. change in pressure between a rarefaction, compression
- 4. a wave that transmits energy through matter
- 5. forms a right angle
- 6. bottom of a wave
- 8. top of a wave
- 9. length between a wave
- 12. atoms are spread apart