Simple Machines

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Across
  1. 2. usually used to slide or roll a load from a lower to higher, or higher to lower level
  2. 3. factor in an experiment that is intentionally kept the same
  3. 5. any of the six basic mechanical devices used for applying force
  4. 8. a wheel with a groove in it in which a cord or rope can be passed to raise or lower a load
  5. 9. Example of a wedge
  6. 11. a push or a pull that influences the motion of another object
  7. 12. an object usually made of wood or metal that has one thick end that tapers to a thin edge on one side
  8. 13. a bar resting upon a fulcrum that is often used to move heavy loads by placing pressure on one side
  9. 14. tentative, testable explanation for a phenomenon
  10. 15. a wheel attached to a rod, shaft or an axle that can be turned
  11. 17. the force that attracts all objects toward the center of the Earth
Down
  1. 1. the factor being measured in an experiment
  2. 4. an inclined plane or thread wrapped around a shaft
  3. 6. the factor in an experiment that is intentionally changed
  4. 7. the pivot or the fixed part needed to work with a bar
  5. 10. An example of a Pully
  6. 16. the weight or mass that is being supported or carried