light and hadow pg65

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Across
  1. 3. measure of how strong the light is
  2. 6. dark shapes formed when light is stopped
  3. 7. prevented from passing through by something
  4. 8. plural of line used to show light paths
  5. 10. in an undeviating direction
  6. 11. degree of light emitted or seen
Down
  1. 1. a thing that can be seen or touched
  2. 2. not giving much light; faintly lit
  3. 3. very strong in force or feeling
  4. 4. moves from one place to another
  5. 5. ability to do work or produce effect
  6. 7. giving a lot of light; shining strongly
  7. 9. long, thin beams of light