LIGHT REVIEW

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Across
  1. 2. to show something that is true
  2. 4. a light source in nature such as Sun, firefly,...
  3. 7. a light source is made by human such as flashlight, bulb,...
  4. 8. a thing produce light
  5. 10. a light ray bounces off a surface
Down
  1. 1. a light ray is coming from a source
  2. 3. a small electric light you can carry in your hand
  3. 5. bounce off a surface
  4. 6. a fact shows that something is true
  5. 9. a narrow beam of light