Across
- 4. a clear object that separates white light into all the colors of the rainbow
- 5. allows light to pass through
- 8. energy that lets you see
- 10. has at least one curved surface
- 12. the bouncing of light off an object
- 13. length the distance between crests of a wave in a sound wave
- 15. energy that lets you hear
- 16. the repetition of a sound caused by the reflection of sound waves
- 18. allows no light to pass through
- 19. wave a vibration that travels through the air
Down
- 1. the bending of light
- 2. smooth surface that forms images by reflecting light
- 3. moving back and forth really fast
- 6. the distance that a wave dips down or rises higher
- 7. how high or low a note is
- 9. allows some light to pass
- 11. the rate at which a vibration occurs
- 14. the stopping of light
- 17. how loud something is