WEBVTT

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Magnets, magnetism, and machines.

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Let's watch how objects move and work together.

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Here are many objects.

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Some shine, some do not.

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Now look carefully, a magnet is coming close.

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Nothing is touching, but something moves.

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Some objects slide closer, some stay right where they are.

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This special pulling power is called magnetism.

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Magnetism helps a magnet pull metal objects.

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Watch again, the magnet pulls, the metal follows.

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Now look at this tool.

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It helps lift, it helps hold, it helps move things.

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This tool is a machine.

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Machines help us do work more easily.

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Some machines use magnetism to help them work.

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The magnet pulls, the machine helps.

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Together, they pick up metal objects.

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Together, they make work easier.

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Not everything moves.

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Only some objects respond.

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That is magnetism.

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And that is how machines help us.