Simple Machines

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Across
  1. 1. an inclined plane that moves
  2. 2. the force used to move an object
  3. 4. the number of times a machine multiplies the effort force
  4. 6. a measure of how much work a machine does compared to the effort used
  5. 7. a wheel with a rope or chain around it that changes the direction of the force
  6. 9. an inclined plane wrapped in a spiral around a cylinder
Down
  1. 1. a simple machine made of a wheel with a rod in the centre
  2. 3. the force that opposes the effort force
  3. 5. a ramp
  4. 8. a simple machine with a bar that moves around a fixed point