Light Vocab

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Across
  1. 3. Is a form of energy
  2. 5. dark shapes that appear when light sources are blocked
  3. 7. allows all light to pass through
Down
  1. 1. cannot make its own light
  2. 2. makes its own light
  3. 4. allows some light to pass through
  4. 6. allows no light to pass through
  5. 8. a straight line of light