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simple machine

a machine with few or no moving parts

inclined plane

a simple machine that is a flat surface with one end higher than the other

lever

a simple machine made of a bar that moves on a fixed point

fulcrum

the fixed point on which a lever moves

load

the object that a lever lifts or moves

pulley

a simple machine made up of a wheel with a rod, or axle, going through the center

compound machine

two or more simple machines put together

force

the effort that changes the position or direction of an object

work

the force is it takes to move an object

Flickr Creative Commons Images

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