Simple Machines

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Across
  1. 3. a rope wrapped around a wheel
  2. 6. a bar that is free to turn on a fixed point called a fulcrum
  3. 9. a machine that combines two or more simple machines
  4. 10. a pulley that doesn’t move
  5. 11. a pulley that moves
  6. 12. an inclined plane that turns around a central point
Down
  1. 1. a device that makes work easier with only one movement
  2. 2. a slanted surface or ramp
  3. 4. an inclined plane with 2 sloping sides instead of one
  4. 5. a machine consisting of two wheels of different sizes that rotate together
  5. 7. a measure of how much of the work put into a machine is changed to useful
  6. 8. the transfer of energy through motion
  7. 13. put out by a machine