5th grade simple machines
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18 terms
Terms | Definitions |
|---|---|
 axle | a pole which is connected to the centerof a wheel |
| compound machine | a machine made up of more then 1 simple machine |
| force | a push or a pull causing objectst ostop, start, slow down, speed up, change direction or change shape |
| fulcrum | the part of a lever that doesn't move |
| gear | toothe wheel |
| inclined plane | a sloping surface, or ramp used to help move things to higher or lower places |
| lever | a simple machine with 2 main parts: a fulcrum and an arm which moves on the fulcrum |
| load | anything that we want to move (resistance) |
| machines | devices which help us to do work wit hreduced effort |
| pully | a simple machine made up of a grooved wheel with a rope, belt or chain around it |
| fixed pully | a pully which changes the diection of the effort |
| movable pully | a pully which moves up or down with the load |
| ramp | a slopping surface or inclined plane, used to help lift or lower objectes |
| screw | a simple machine made up of 2 main parts: a stright shaft and a sloping surface wrapped around in a spiral |
| simple machines | wheel and axil, pully, inclined plane, wedge, lever and screw |
| wedge | a simple machine with 2 surfaces which came together at one point, making a thin and a thick end; 2 inclined planes back to back |
| wheel | a simple machine used to roll a load easily along a surface |
| work | we do work whenever we use force to move something (amount of work=effort x distance) |
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