| Twenty Rigid Plates |
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| q | What can happen to the cold boundary? |
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| è | The lithosphere has broken into a number of rocky pieces, called
plates. |
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| q | There are six large plates plus a number of smaller one comprise the |
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| Earth’s surface (a total of 20 plates). |
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| q | The plates range from several hundred to several thousand kilometers
in |
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| width. |
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