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PS chapter 5 vocab.
Lesson 1, 2, and 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, divided by the time required to do the work or transfer the energy; measured in watts | Power |
| device that makes doing work easier by increasing vthe force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied | 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 advantages |
| ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage. | efficeincy |
| a machine that does work with only one movement of the machine | Simple Machine |
| a bar that is free to pivot or turn around a fixed point. | lever |
| a grooved wheel with a rope, chain, or cable running along the groove. | pulley |
| 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 |
| an inclined plane wrapped in a spiral around a cylinderical post. | screw |
| an inclined plane with one or two sloping sides. | wedge |
| two or more simple machines that operate together. | compound machine |
| a sloping surface, such as a ramp that reduces the amount of force required to do work. | incline plane |
Created by:
jacobbarnes1
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