Simple Machines Crossword Puzzle

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Across
  1. 2. put out by a machine
  2. 3. an inclined plane with 2 sloping sides
  3. 4. an inclined plane that turns around a central point
  4. 7. a slanted surface or ramp
  5. 9. the unit work is measured in
  6. 10. a device that makes work easier with only one movement.
  7. 11. a rope wrapped around a wheel
Down
  1. 1. a machine that combines two or more simple machines
  2. 3. the transfer of energy through motion
  3. 5. two wheels that rotate together with an axle acting as a fulcrum
  4. 6. a bar that turns at the fulcrum
  5. 8. a measure of how much of the work put into a machine is changed to useful