Reflection and refraction vocab

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Across
  1. 2. the separation of light into colors arranged according to frequency
  2. 3. bending of a wave as it crosses the boundary of 2 media
  3. 8. the return of a wave back to its original medium
  4. 9. the angle of incidence at which light is refracted at an 90 degrees
  5. 12. when walls are too reflective, the sound becomes garbled
Down
  1. 1. the reflection of light through a rough surface
  2. 4. the angle between the reflected ray and the normal
  3. 5. having an outline caved inward like an interior of a cirle
  4. 6. an optical image formed from the divergent light rays
  5. 7. the angle between the incidence ray and the normal
  6. 10. a distorted image
  7. 11. having an outline curved like an exterior of a circle