Across
- 2. The substance that a wave travels through.
- 5. The highest point of a wave.
- 7. Waves that travel parallel. Sound Waves
- 8. This type of wave travels the fastest
- 9. The lowest point of a wave.
Down
- 1. The distance between the middle of a wave and the farthest point.
- 3. The length of one section of a wave.
- 4. Sound cannot travel here. Light travels fastest here.
- 6. Waves that travel perpendicular. Light Waves.