Chapter 3 Vocabulary Review

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Across
  1. 1. A device that is thick at one end and tapers to a thin edge at the other end.
  2. 4. A flat, sloped surface.
  3. 7. A simple machine related to the inclined plane. An inclined plane wrapped around a cylinder.
  4. 10. One joule of work done in one second. The standard unit for power.
  5. 12. A rigid bar that is free to pivot or rotate on a fixed point.
  6. 13. The force the person exerts when doing work / into a machine.
  7. 14. The force the machine exerts.
Down
  1. 2. Compares the output work to input work and is expressed as percentage.
  2. 3. The number of times a machine increases a force exerted on it. (how much easier work feels when using a machine)
  3. 5. The most basic device for making work easier.
  4. 6. A device that allows people to do work in an easier way.
  5. 8. The rate at which work is done.
  6. 9. The standard unit used for 'work' and named after a physicist who studied 'work' in the 1800s.
  7. 10. Anytime a force is exerted on an object that causes that object to move some distance.
  8. 11. The fixed point that a lever pivots around.