Across
- 3. Red-shift Blue-shift
- 7. The surrounding particles
- 8. The distance between crest/trough to equilibrium
- 11. The highest point on a surface wave
- 12. Used in mobile phones to send texts
- 13. ___________ bone-saw.
Down
- 1. What waves can you hear?
- 2. Waves that require a medium to travel
- 4. How often the particles of the medium vibrate
- 5. Does not require a medium to travel
- 6. A change in direction from one medium to another
- 9. The frequency of a sound wave
- 10. East to West