Unit 4: Machines

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Across
  1. 4. A simple machine that is a variation of the lever; consists of a large wheel fixed to a smaller wheel that rotates together
  2. 6. An inclined plane with either one or two sloping sides; a simple machine
  3. 9. The point on which a lever rotates or pivots
  4. 10. Two or more simple machines working together
  5. 13. The force exerted by the machine
  6. 14. An arrangement of several pulleys that allows a person to lift heavy machinery
  7. 16. Amount of work done per unit of time
  8. 17. An inclined plane wound around a cylinder; a simple machine
  9. 18. The SI unit of power; one watt is one joule of work per second
Down
  1. 1. A slanted surface used to raise objects; a simple machine
  2. 2. The distance from the fulcrum to the resistance force in a lever
  3. 3. The amount by which the applied force is multiplied by a machine
  4. 5. The place on a level where the effort force is applied
  5. 7. The ratio of the work output of a machine to its work input
  6. 8. A device that makes work easier by changing the speed, direction, or amount of force; it consists of only one machine
  7. 11. Equals 1000 watts; watt is a very small unit of power
  8. 12. A bar free to rotate around a point; a simple machine; consists of an effort arm, fulcrum, and resistance arm
  9. 15. The force you apply to the machine