Across
- 4. Light travels in a (Blank) line
- 7. Stored energy waiting to be released
- 8. Light that can be bent when light passes from the air into water
- 10. Low pitched sounds are caused by
- 11. Our main source of energy and there are four types
- 13. Another word for heat
Down
- 1. To take in or soak
- 2. High pitched sounds are caused by
- 3. Produced by vibrations
- 5. When two things rub together
- 6. Motion
- 9. Having to do with reflection, absorbing, and refraction
- 12. Light that bounces off