Across
- 2. “below red”
- 3. a piece of glass that separates white light into the colors of visible light by refraction
- 6. amplitude modulation
- 7. a type of electromagnetic wave produced by the sun
- 10. frequency modulation
- 12. the range of colors
- 13. when the electron returns to its original position called a?
Down
- 1. the idea that light can act as either particles or waves
- 4. have shorter wavelengths and higher frequencies than radio waves.
- 5. cover a wide range of waves in the EM spectrum.
- 8. are used to treat some forms of cancer
- 9. the falling of a beam of light on a surface
- 11. the very narrow range of wavelengths in the electromagneticwave spectrum that humans can see.