Across
- 2. The energy of motion
- 3. Measurement of the number of times a sound wave repeats
- 5. The energy that moves left and right
- 7. Light passes partially
- 9. Unit to measure frequency
- 10. The stored energy
- 13. How much sound energy reaches our ear
- 15. to move back and forth
- 17. The length between the compression in a sound wave
- 19. Particle that carries visible light and others of electromagnetic radition
- 20. Light passes
Down
- 1. How light bends as it passes around objects
- 4. When light is bent as it moves through 1 kind of matter to another
- 6. Light don't pass
- 8. Substance(gas, liquid, or solid) through which sound waves travel
- 11. How high or low a sound
- 12. When light bounces off of an object
- 14. A form of energy which helps us to see objects
- 16. The energy that moves up and down
- 18. Vibration that passes through molecules of a medium