Multiple choice

Convection is the process of hot rock rising and cool rock sinking in which layer of the Earth?

  1. crust

  2. mantle

  3. inner core

  4. outer core
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Convection currents occur in the mantle, where hot, less dense rock rises slowly toward the crust, cools, becomes denser, and sinks back down. This process drives the movement of tectonic plates. The crust is solid and does not undergo this type of rock convection, while the outer core undergoes liquid metal convection.

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