Simple Machines

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Across
  1. 2. Simple machine made with a wheel on an axle and a rope.
  2. 7. A lever used by carpenters.
  3. 9. Mechanical advantage of a pulley is the number of ____ supporting the load.
  4. 11. Weight to be moved by a simple machine.
  5. 12. Effectiveness of a simple machine is its mechanical ____.
  6. 14. Example of an inclined plane.
Down
  1. 1. Pivot.
  2. 3. Pulley system used by mechanics is a block and ____.
  3. 4. An example of a ____ order lever is a fishing rod.
  4. 5. Example of lever in a playground.
  5. 6. Scissors are an example of a ____ order lever.
  6. 8. A rigid bar that turns freely about a pivot.
  7. 10. A type of simple machine is an inclined ____.
  8. 13. Type of simple machine is a wheel and ____.
  9. 15. Example of wheel and axle is a ____ knob.