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simple machines

simple machine

a machine that does work with only one movement

compound machine

a machine made up of a combination of simple machines

inclined plane

a flat sloped surface or ramp

wedge

an inclined plane that moves. Can have two sloping sides.

screw

an inclined plane that wraps around a cylinder or post

lever

a rigid rod or plank that pivots or rotates about a fixed point

wheel and axel

two circular objects of different sizes that area attached and rotate together

pulley

a grooved wheel with a rope or cable wrapped around the groove

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