Name ______________________________

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Across
  1. 4. Machine made up of a combination of two or more simple machines.
  2. 6. Rate at which work is done; equal to the work done divided by the time it takes to do the work; measured in watts.
  3. 8. Force that opposes motion between two touching surfaces.
  4. 9. Simple machine consisting of a rigid rod or plank that pivots or rotates about a fixed point called the fulcrum.
  5. 10. A machine that does work with only one movement; includes the inclined plane, wedge, screw, lever, wheel and axle, and pulley.
  6. 12. Simple machine that is a flat surface, sloped surface, or ramp.
  7. 14. Simple machine consisting of an inclined plane that moves; can have one or two sloping sides.
Down
  1. 1. Force exerted by a machine.
  2. 2. Force exerted on a machine.
  3. 3. Simple machine that is an inclined plane wrapped around a cylinder or post.
  4. 5. Number of times the input force is multiplied by a machine; equal to the output force divided by the input force.
  5. 7. is done when a force exerted on an object causes that object to move some distance; equal to force times distance; measured in joules.
  6. 11. a push or pull
  7. 13. Simple machine made from a grooved wheel with a rope or cable wrapped around the groove.