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3rd 6 Wks Vocab
Simple Machines
| Vocabulary Word | Definition |
|---|---|
| system | a group of parts that work together |
| machine | a tool that makes work easier |
| lever | a straight bar that moves on a fixed point |
| pulley | a simple machine that uses a wheel and rope |
| wheel and axle | a wheel that turns on a post |
| inclined plane | a flat surface that is raised at one end |
| screw | an inclined plane wrapped into a spiral |
| wedge | two inclined planes placed back to back |
| force | a push or pull applied to matter |
| work | when force changed the motion of an object |
| fulcrum | the point that a lever rests on |
| load | the object trying to be moved |
| axle | a post the wheel turns on |