| A | B |
|---|
| energy | the ability to do work |
| force | a push or pull |
| friction | force caused by objects rubbing together that slows moving objects |
| fulcrum | point at which a lever is supported and turns |
| inclined plane | a slanted surface |
| lever | straight bar that moves on a fixed point |
| load | an object or objects that are being moved |
| simple machine | a machine with few or no moving parts |
| pulley | a grooved wheel with a rope around it |
| screw | a simple machine used to hold objects together |
| torque | a turning force; a twist |
| wedge | a simple machine used to cut or split an object |
| wheel and axle | a simple machine with a center rod attached to a wheel |
| work | done when a forced is used to move something |
| gravity | a force that makes objects pull towards each other |
