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Magma is molten rock and while it may rise to the crust and come out in volcanoes, it DOES NOT sink to the core.

Do not think that the deep earth is made of molten rock, it is NOT, the Earth's mantle is solid.

This said, even stuff which is solid flows like a liquid very slowly over Geologic time and the rocks of the mantle do indeed convect. as this happens the Earths continental, surface plates are moved around the planet.

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9y ago

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