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| The tectonic plates are big pieces of the Earth's crust that "float" in the mantle. | |
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| This squirrell is nutty. Bread floating on the fireplace? | |
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| They meet at plate boundaries and sometimes move, causing earthquakes and volcanoes. | |
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| So this crashing into one another releases a lot of energy? | |
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| Right, and sometimes mountains are built if the plates fold up. | |
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| That's a lot of stuff going on. | |
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