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15 Cards in this Set
- Front
- Back
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force
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a push or a pull
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friction
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the force caused by two objects rubbing together that slows down or stops moving objects
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gravity
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the force that pulls objects toward the center of the earth
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magnetism
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the force that causes magnets to pull on objects that are made of certain metals, such as iron
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pole
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a place on a magnet where the magnetism is strongest
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work
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something done whenever a force moves an object through a distance
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simple machine
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one of six kinds of tools with few or no moving parts that make work easier
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lever
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simple machine made of a bar or board that is supported underneath at the fulcrum
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fulcrum
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the point on which a lever is supported and moves
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inclined plane
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a simple machine that is a flat surface with one end higher than the other
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screw
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a simple machine used to hold objects together
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wedge
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a simple machine used to cut or split an object
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pulley
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a simple machine made of a wheel and a rope
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gear
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a wheel with a jagged edges like teeth
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wheel and axle
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a simple machine that has a center rod attached to a wheel
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