Simple Machines

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Across
  1. 3. and axle, two wheels of different sizes that rotate together
  2. 4. the transfer of energy through motion and has to be exerted over a distance
  3. 5. machine, a device that makes work easier with only one movement
  4. 6. an incline plane that turns around a central point
  5. 7. advantage, advantage over the work completed
Down
  1. 1. a rope wrappped around a wheel
  2. 2. plane, a slanted surface or ramp
  3. 4. an incline plane with two sloping sides instead of one
  4. 8. machine, a machine that combines two or more simple machines
  5. 9. a bar that is free to turn on a fixed point called a fulcrum