Light & Waves

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Across
  1. 2. The hole in the center of your eyes that allows light to enter
  2. 7. The type of wave that does not need a medium to travel
  3. 8. _________ light - the type of light that humans can see
  4. 9. Color with the longest wavelength
  5. 12. The measure of the number of waves that pass in a given amount of time
  6. 17. The colored part of the eye
  7. 18. Types of EM waves used in telescopes
  8. 19. When a light ray hits an object, then bounces off
Down
  1. 1. Nerves that carry electrical signals to the brain
  2. 3. The distance between each wave; usually measured from crest to crest
  3. 4. The bending of light waves as they travel from one medium to another
  4. 5. The type of wave that does need a medium to travel through
  5. 6. Color with the shortest wavelength
  6. 10. The highest point on a transverse wave
  7. 11. The lowest point on a transverse wave
  8. 13. EM waves with the longest wavelength
  9. 14. State of matter in which light waves travel the fastest
  10. 15. The height of the wave; measures how much energy the wave is carrying
  11. 16. EM waves used for cancer treatments; has the shortest wavelength