Which best explains mantle convection?(1 point)

Question

Responses

Warmer and cooler material in the mantle move up.
Warmer and cooler material in the mantle move up.

Cooler material in the mantle moves down, and warmer material in the mantle moves up.
Cooler material in the mantle moves down, and warmer material in the mantle moves up.

Warmer and cooler material in the mantle move down.
Warmer and cooler material in the mantle move down.

Warmer material in the mantle moves down, and cooler material in the mantle moves up.
Warmer material in the mantle moves down, and cooler material in the mantle moves up.

Answer 1

The best explanation for mantle convection is:

Cooler material in the mantle moves down, and warmer material in the mantle moves up.

This describes the circular process of heat transfer in the mantle, where the hotter, less dense material rises, and the cooler, denser material sinks.