simple machines

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Across
  1. 1. A tool with a sharp edge used to cut or split
  2. 2. An inclined plane wrapped around a rod
  3. 5. A bar that moves around a fixed point to lift or move objects
  4. 8. A wheel with a rope or chain used to lift things
  5. 9. A rod that goes through a wheel to help it turn
Down
  1. 1. A device that uses a rope and drum to lift or pull heavy object
  2. 3. and Axle, A round object that turns around a rod to make work easier
  3. 4. Plane, A flat surface set at an angle to move objects upward
  4. 6. Another word for an inclined plane
  5. 7. A wheel with teeth that transfers motion