Physical Science Ch 13 Work and Machines Vocab Crossword

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Across
  1. 5. A torque is any force that tries to cause an object to rotate around its axis.
  2. 7. Measures the mechanical advantage taking into account all mechanical losses sustained throughout the machine.
  3. 8. The energy transferred to an object when an external force acts on the object to move it.
  4. 9. The output force is between the fulcrum and the input force.
  5. 11. The rate of doing work.
  6. 16. A number measurement that has no units.
  7. 19. A simple machine that consists of a rigid bar that turns about a pivot point.
  8. 21. A simple machine that consists of an inclined plane wrapped around a cone or cylinder in a spiral pattern.
  9. 22. A simple machine that consists of a plane whose opposite ends are at different heights.
  10. 23. A simple machine that consists of a wheel and axle system with a groove around the perimeter of the wheel in which a rope, cable, or belt moves with the wheel as it rotates.
  11. 25. The input force is between the fulcrum and output.
Down
  1. 1. The fulcrum is between the input force and the output force.
  2. 2. A machine that combines two or more simple machines.
  3. 3. The point about which a lever turns, or pivots.
  4. 4. The unit for work.
  5. 6. A simple machine consisting of two inclined planes attached at an acute angle and used to spread a material apart as it is forced into the material.
  6. 10. The effectiveness of a machine or process at converting energy from one form to another.
  7. 12. The SI unit for power.
  8. 13. The combination of two fixed pulleys and two movable pulleys.
  9. 14. Basic mechanical devices that change the magnitude, direction, or distance traveled of the force used when doing work.
  10. 15. A simple machine that consists of a wheel with teeth on its perimeter that mesh with similar teeth on another piece to do work.
  11. 17. Is the measure of mechanical advantage for an ideal machine. The ratio of the input distance to the output distance.
  12. 18. A simple machine consisting of a wheel with a rod running through its axis that acts as the pivot point.
  13. 20. The measure of the change in input needed to do a certain amount of work (output) when using a simple machine.
  14. 24. The unit for force.