Electromagnetic waves

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Across
  1. 2. The color you see from the color of light reflecting
  2. 5. A mirror that curves outward
  3. 7. A wave where the particles move parallel
  4. 9. The change in direction of a wave as it changes speed
  5. 11. A material that allows almost all light to pass through but its blurry
  6. 13. A wave that travels through matter
  7. 15. A material where the light doesn't pass
  8. 16. A material in which the wave travels
  9. 17. A transparent object with at least one curved side
  10. 18. A wave in which the disturbance is perpendicular
  11. 19. The number of times the pattern repeats
  12. 20. A wave that can move only through matter
Down
  1. 1. The passage of a wave off the surface
  2. 3. The change in direction of a wave
  3. 4. Maximum distance the wave moves from its position
  4. 6. A material that allows almost all of the light to pass through
  5. 8. When a wave bounces off the surface
  6. 10. Transfers energy by a wave
  7. 12. The distance between one point on a wave and another
  8. 14. A lens that's thicker at the edges than in the middle