Work, Power, & Simple Machines Unit Crossword

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Across
  1. 3. The unit for force.
  2. 5. The amount of work completed in a certain period of time is called ___.
  3. 7. A(n) ___ ___ combines two or more simple machines together into a single machine.
  4. 14. A(n) ___ ___ is a device that makes work easier.
  5. 17. The number of times a machine multiplies your effort force is called its ___ ___.
  6. 19. A jelly jar top is an example of a(n) ___.
  7. 20. A flagpole is an example of a(n) ___.
  8. 22. Simple machines can change the ___ at which the resistance moves.
Down
  1. 1. Simple machines can change the ___ or distance through which the force is applied.
  2. 2. ___ is done when an object is moved through a distance in the direction of the applied force.
  3. 4. A ramp is an example of a(n) ___.
  4. 6. An axe is an example of a(n) ___.
  5. 8. Simple machines change the ___ needed to give you a mechanical advantage.
  6. 9. Due to ___, the work put into a machine is always greater than the work output.
  7. 10. The unit for work.
  8. 11. You need more power to run up the stairs than to walk because it takes you less ___.
  9. 12. When you ___ the friction, you increase the mechanical efficiency of the machine.
  10. 13. You can determine the mechanical advantage of an incline plane by ___ the length of the incline by its height.
  11. 15. A doorknob is an example of a(n) ___.
  12. 16. The unit for power.
  13. 18. The ratio of work output to work input is called ___.
  14. 21. A hammer is an example of a(n) ___.