module 4 vocabulary

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Across
  1. 1. make things visible
  2. 4. to represent the direction of light
  3. 6. when light bounces off many objects to to your eye
  4. 9. to give off light
  5. 10. to make symbols into letters
Down
  1. 2. to shine light on a object
  2. 3. how you see objects
  3. 5. illuminate light reflects off a object to your eye
  4. 7. to make letters into symbols
  5. 8. a system of letters and symbols