Light & Matter

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Across
  1. 3. located at the back of the eye; turns light signals into electrical signals.
  2. 4. When light passes through an object (materials).
  3. 5. dark round circle in the colored part of the eye.
  4. 6. Universally represents a change in direction
  5. 9. When light bounces off an object.
  6. 10. clear like a window; helps the eye focus the light to make things look sharp and clear.
  7. 13. Light that isn't seen.
  8. 14. Representations to help explain a phenomenon.
Down
  1. 1. see-through, clear.
  2. 2. semi transparent.
  3. 7. when light changes directions
  4. 8. helps focus the light coming into your eye so you can see things clearly.
  5. 11. like a cable; connecting the retina to the brain
  6. 12. controls how wide the pupil is and how much light can pass into your eye.
  7. 15. not able to be seen through; not transparent.