Lights and shadows

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Across
  1. 2. a form of energy that travels in waves from a source
  2. 3. a ray of light that hits a surface.
  3. 6. ____________ is when light bends from one place to another.
  4. 8. objects which let some light travel through are _____________.
  5. 9. light waves travel out from a object in a ______________line.
  6. 10. Light travels in a __________.
Down
  1. 1. when light is blocked it creates a ___________.
  2. 4. objects which let light travel through are ______________.
  3. 5. a ray of light that bounces back after hitting a surface.
  4. 7. objects that do not let light through them are ___________.