Chapter 7

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Across
  1. 2. one of many cells in the retina of the eye that respond to colors.
  2. 4. The change in direction of a wave as it changes speed while moving from one medium to another.
  3. 9. a lens that is thicker at the edges than in the middle.
  4. 11. relates to a sponge.
  5. 12. Reflection of light from a smooth, shiny surface.
  6. 15. a lens that is thicker in the middle than at the edges.
Down
  1. 1. the bouncing of a wave off of a surface.
  2. 3. forms a blurry image.
  3. 5. a clear image.
  4. 6. Reflection of light from a rough surface.
  5. 7. light cannot pass through this.
  6. 8. the passage of light through an object.
  7. 10. a mirror that curves outward.
  8. 13. a transparent object with at least one curved side that causes light to change direction.
  9. 14. a mirror that curves inwards.