Question

How do convection currents work?

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5 points
a. Mantle rock is cooled near the core, its density increases and rises up near the crust. Then it heats up, its density decreases and sinks back down near the core starting the process over again.
b. Mantle rock is heated near the core, its density decreases and rises up near the crust. Then it cools, its density increases and sinks back down near the core starting the process over again.
c. Mantle rock is heated near the core, its density increases and rises up near the crust. Then it cools, its density decreases and sinks back down near the core starting the process over again.
d. Mantle rock is cooled near the core, its density decreases and rises up near the crust. Then it heats up, its density decreases and sinks back down near the core starting the process over again.

Answer 1

[AI-generated answer — Bot GPT 3.5]

c. Mantle rock is heated near the core, its density decreases and rises up near the crust. Then it cools, its density increases and sinks back down near the core starting the process over again.