Simple Machines & Light

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Across
  1. 3. When light hits an object it is reflected. A shiny surface reflects ______light than a dull object.
  2. 6. When light is reflected it changes
  3. 10. Darkness is the absence of
  4. 11. a straight slanted or sloping surface
Down
  1. 1. In hospitals and other places inclined planes are called as
  2. 2. Light travels in a
  3. 4. The moon in not a _________ of light
  4. 5. Some machines have very few parts, these are called
  5. 7. A shadow is caused because light cannot travel around
  6. 8. We only see light when it enters our
  7. 9. A wheel with grooved rim and a rope, chain, or belt running around its grooves