Simple Machines
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25 terms
Terms | Definitions |
|---|---|
 force | a push or a pull that moves an object. |
| machine | an object that helps us do work |
| push-pull meter | a tool that measures force |
| simple machine | has one or no moving parts. It needs force, a push or a pull, from a person or an animal. |
| work | is a force that is put on an object, and the object moves. |
| WWLIPS | the short form for the 6 simple machines wheel, wedge, lever, inclined plane, pulley, screw |
| lever | a simple machine that helps us lift a heavy object |
| LEAF | the short form of load, effort, arm and fulcrum |
| trade-off | you give up one thing to gain something else |
| friction | a force that resists motion. It happens when two objects rub against each other. |
| lubricant | a slippery substance that reduces the friction between two surfaces |
| wheel | a circular object that spins around a center and reduces friction. It is a simple machine. |
| roller | a tubed-shaped wheel |
| screw | a simple machine that is an inclined plane that is wrapped around a cylinder, it has a head |
| pulley | a simple machine, a band that moves a wheel or a gear |
| inclined plane | is a flat surface that slants or slopes. It is the only simple machine that does not move |
| wedge | an inclined plane that moves. It is a simple machine that cuts, splits or pierces an object |
| grooved wheel | part of a pulley, spins around an axle. A rope or a chain rests in the groove. |
| axle | a center rod that joins two wheels together |
| nail | a thin pointy piece of metal that is used to hold things together. |
| gadget | a tool that only does one thing |
| distance | how far something goes |
| gear | a wheel with teeth that fits another gear and makes it move |
| energy | a force that gets things done, power and action |
| fulcrum | the part of a lever that hold the arm |
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