Light

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Across
  1. 1. a material that allows SOME light to travel through
  2. 6. a material that allows light to travel through
  3. 7. when light bounces off an object
  4. 8. to take in
  5. 9. a material that does not allow light to travel through
Down
  1. 2. created because light always travels in a straight line
  2. 3. a shiny, flat surface that reflects light
  3. 4. when light passes through a material
  4. 5. when light travels through a medium and bends