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1 November, 21:17

Which statement accurately describes the movement of Earth's plates due to convection currents?

Material near the core cools as heat is transferred toward the crust.

Heated materials become denser, causing them to rise toward the surface.

As heated material gets closer to the surface, it begins to cool.

As materials cool, they become less dense and sink back toward the core.

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  1. 1 November, 22:45
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    The correct answer is the third statement, that is, when the heated substance gets near to the surface, it starts to cool.

    Explanation:

    A current that arises within a fluid due to convection is termed as the convection current. In comparison to the surface, the core is extremely hot, thus, both core and the surface exhibit very distinct temperatures. The mantle rises towards the surface when it gets heated as it moves close to the core. However, when it moves towards the surface, the mantle starts to turn cool and denser.

    Afterward, the magma, which is cool, again then begins to move close to the core, and gets heated and rises again, this phenomenon results in the emergence of convection currents.
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