Across
- 2. length of one complete cycle
- 3. or material that carries a wave
- 4. Wave/Perpendicular to the direction of energy
- 8. allowing light to pass through
- 10. Wave/Requires a medium
- 11. of light energy
- 12. unit for frequency
- 13. is close together
- 14. of waves passing a point in a certain time
- 15. Wave/Parallel to the direction of energy
Down
- 1. is far apart
- 5. Wave/Does not require a medium
- 6. through medium or vacuum from one location to another
- 7. Speed/Frequency times Wavelength
- 9. to the top of a crest