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Force and Motion

Force and motion and simple machines

work using a force to move an object across a distance
force a push or pull that makes something move
gravity a force that attracts two objects together
energy the ability to do or to move something
friction resists movement between two objects that are touching
motion a change in position of an object over time
simple machine a simple device that does work
wheel and axle a simple machine with a round frame that turns on a central rod and makes it easier to move something
fulcrum the fixed point or support on a which a lever turns when moving. The center of a seesaw
lever a simple machine that has a bar which moves on or around a fixed point and can be used for lifting things
inclined plane a simple machine with a flat surface set at an angle to a horizontal surface
pulley a simple machine that has a wheel over which a rope or chains are pulled and makes it easier to lift something or move it sideways
screw a simple machine that consists of an inclined plane that twists around a rod and is used to hold things together
wedge a simple machine with 2 or more inclined planes and is used to split things apart
load something that is lifted, carried, or supported
Created by: kkoenen



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