Across
- 2. A vertical wave.
- 3. Vibrations that travel through the air.
- 5. When a wave bounces off a surface.
- 9. The difference between crests.
- 10. Not able to be seen through.
- 11. The lowest point in a wave.
- 12. The height of a wave.
- 13. When waves go in different directions.
Down
- 1. Able to be seen through.
- 4. A substance that some waves pass through.
- 6. The highest point in a wave.
- 7. Electromagnetic waves that travel through the air.
- 8. A horizontal wave.