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Work and Machines: Vocabulary Matching |
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| 1. | compound machine | a. grooved wheel with a rope, chain or cable running along the groove |
| 2. | efficiency | b. inclined plane wrapped in a spiral around a cylindrical post |
| 3. | inclined plane | c. transfer of energy that occurs when a force makes an object move |
| 4. | input force | d. sloping surface that reduces the amount of force required to do work |
| 5. | lever | e. amount of work done per unit of time |
| 6. | machine | f. measures how much work put into a machine changes into useful output |
| 7. | mechanical advantage | g. simple machine that consists of an axle attached to the center of a wheel |
| 8. | output force | h. ratio of the output force to the input force |
| 9. | power | i. force applied by machine |
| 10. | pulley | j. force applied to machine |
| 11. | screw | k. machine that does work with only one movement of the machine |
| 12. | simple machine | l. bar that is free to pivot or turn around a fixed point |
| 13. | wedge | m. combination of two or more machines |
| 14. | wheel and axle | n. inclined plane with one or two sloping sides, can be used for cutting |
| 15. | work | o. device that makes doing work easier |
| Match the units | ||
| 16. | joules | a. power |
| 17. | watts | b. force |
| 18. | seconds | c. distance |
| 19. | newtons | d. work |
| 20. | meters | e. time |
