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PS ch.5 vocab TP
Sections 1,2,3
| Question | Answer |
|---|---|
| work | transfer of energy that occurs with a force makes an object move |
| power | the amount of work done in 1 second It is a rate the rate at which work is done |
| machine | a device that makes doing work easier. |
| input force | force that is applied to the machine |
| output force | force applied by the machine |
| mechanical advantage | ratio of the output force to the input force |
| efficiency | measure of how much of the work put into a machine is changed into useful out put work by machines |
| simple machine | a machine that does work with only one movement of the machine |
| lever | a bar that is free to pivot or turn around a fix point |
| pulley | a grooved wheel with a rope,chain, or cable running along the groove |
| wheel and axle | simple machine consisting of a shaft or axle attached to the center of a large wheel so so that the wheel and axle rotate together |
| inclined plane | a sloping surface such as a ramp that reduces the amount of force required to do work |
| screw | an inclined plane wrapped in a spiral around a cylindrical post |
| wedge | an inclined plane with one or two sloping sides |
| compound machine | 2 or more simple machines that operate together |
| machine | a device that make doing work easier |
| input force | the force that is applied to the machine |
| output force | force applied by the machine |
| mechanical advantage | ration of the output force to the input force |
| efficieny | a measure of how much of the work put ingo a machine is changed into useful output work by the machine |
| simple machine | a machine that does work with only one movement of the machine |
| lever | a bar that is free to pivot or turn around a fixed point |
| pulley | a grooved wheel with a rope chain or cable running along the groove |
| wheel and axle | 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 |
| inclined plane | a sloping surface such as a ramp that reduces the amount of force required to do work |
| screw | an inclined plane wrapped in a spiral around a cylindrical post |
| wedge | an inclined plane with one or two sloping sides |
| compound machine | Two or more simple machines that operate together |
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