Across
- 4. moves from one place to another
- 6. back and forth
- 8. propagate
- 9. sound produces
- 14. valley of the wave
- 15. needs something to travel through
- 16. frequency of sound, light, or other waves
- 17. displacement of
- 18. "peak" of a wave
- 19. where the propagation is parallel to the medium
- 20. cancel parts
Down
- 1. builds up wave energy
- 2. time
- 3. distance of the wave crest or trough
- 5. add together
- 7. overlap in space
- 10. where the propagation is periductular to the oscillation
- 11. amount of waves
- 12. equilibrium
- 13. wave that travels