Across
- 7. when particles are scrunched together
- 10. when particles are spread out
- 11. the bottom of a wave
Down
- 1. parallel to the wave
- 2. perpendicular to the wave
- 3. how many wave cycles appear in a wave
- 4. the length of a wave cycle
- 5. Waves waves that need matter to travel through
- 6. how big a transverse wave is
- 8. the top of a wave
- 9. matter that waves travel through