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jan 1, 1929 - Arthur Holmes 1929

Description:

There are many different types of convection currents. Such as thermal convection . Convection currents are currents that flow in a fluid by rising when hot and sinking when cold. Convection in the mantle is when the hot magma rises then cools at the surface to create more land .

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Date:

jan 1, 1929
Now
~ 89 years ago
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