Light and Sound Waves

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Across
  1. 2. Clear layer that protects the eye
  2. 5. _________ sighted means the image forms in front of the retina
  3. 6. Front of the eye that lets light in
  4. 7. High ________ means a high pitched sound
  5. 8. A sound wave is this type
  6. 10. What causes sound
  7. 13. Different coloured light has different ___________
  8. 16. The type of lens that forms a real image
  9. 18. What is needed for sound to travel
  10. 19. Back of the eye where the image forms
  11. 20. The type of mirror that focuses light
Down
  1. 1. Means to bring the light rays together
  2. 3. Light bouncing off an object
  3. 4. The height of a wave from the neutral line
  4. 9. A light wave is this type
  5. 11. Light bending when going through an object
  6. 12. Means to spread out the light rays
  7. 14. Cannot travel through space
  8. 15. The angle of __________ = the angle of reflection
  9. 17. Part of the ear that magnifies sound