Simple Machines

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Across
  1. 3. FOI
  2. 4. one or more sloping sides.
  3. 8. two attached parts rotating at the same time.
  4. 9. pivots around a fixed point.
  5. 11. FIO
Down
  1. 1. doesnt move.
  2. 2. reduces the amount of force required to work.
  3. 5. IFO
  4. 6. does move.
  5. 7. system of pulleys.
  6. 10. grooved wheel.
  7. 12. has a cylindrical post.