Science Chapter 14 Crossword Puzzle

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Across
  1. 3. the SI unit of power, equal to one joule per second.
  2. 4. an inclined plane wrapped around a cylinder.
  3. 6. the rate of doing work
  4. 9. a simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius.
  5. 10. the distance between the fulcrum in a lever and the input force.
  6. 12. the product of distance and the force in the direction an object moves.
  7. 13. the SI unit of work, equal to 1 Newton-meter.
  8. 15. the fixed point a lever rotates around.
  9. 16. the force exerted by a machine
  10. 17. the distance between the fulcrum in a lever and the output force.
  11. 18. the ratio of the output force to the input force in a machine.
  12. 20. a simple machine that consists of a rope that fits into a groove in a wheel.
  13. 21. the mechanical advantage of a machine in the absence of friction.
  14. 22. a combination of two or more simple machines that operate together.
  15. 24. a rigid bar that is free to move around a fixed point.
  16. 25. the distance an output force acts through in a machine.
Down
  1. 1. the distance through which the input force acts in a machine.
  2. 2. a common unit of power, equal to about 746 watts.
  3. 5. the number of times that a machine increases an input force.
  4. 7. the work done on a machine as the input force acts through the input distance.
  5. 8. the force exerted on a machine.
  6. 11. the work done by a machine as the output force acts through the output distance.
  7. 12. a v-shaped object who’s sides are two inclined planes sloped toward each other.
  8. 14. the percentage of the work input that becomes work output in a machine.
  9. 19. a device that changes a force.
  10. 23. a slanted surface along which a force moves an object to a different elevation.