Across
- 3. bottom of the wave
- 4. top of the wave
- 8. waves waves that can travel without a medium
- 10. transfer of energy
Down
- 1. waves they compress
- 2. waves waves that go up and down
- 5. how many times a wave length passes per second
- 6. waves waves that need a medium to travel through
- 7. the presents of matter
- 9. from the crest to the middle