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Chpt.5 Science Vocab
Lesson 1, 2, 3
| Question | Answer |
|---|---|
| transfer of energy that occurs when a force makes an object move; measured in joules | Work |
| amount of work done, or the amount of energy transferred, decided by the time required to do the work or transfer the energy measured in watts (W). | power |
| is a device that makes doing work easier. | machine |
| the force that is applied to the machine. | input force |
| the force applied by the machine. | output force |
| ratio of the output force exerted by a machine to the input force applied to the machine. | mechanical advantage |
| is a measure of how much of the work put into a machine is changed into useful output work by the machine. | efficiency |
| is a machine that does work with only one movement of the machine | simple machine |
| is a bar that is free to pivot or turn around a fixed point. | lever |
| is a grooved wheel with a rope, chain, or cable running along the groove. | pulley |
| is a simple machine consisting of a shaft or axle attached to the center of a larger wheel, so that the wheel and axle rotate together. | wheel and axle |
| a sloping surface, such as a ramp that reduces the amount of force required to do work. | inclined plane |
| is an inclined plane wrapped in a spiral around a cylindrical post. | screw |
| is an inclined plane with one or two sloping sides. | wedge |
| two or more simple machines that operate together | compound machine |
Created by:
Alexus Lynn Davis
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