Simple Machines & Light

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