Question

In the Earth's mantle, heat is transferred in large convection currents. Within these currents,

A.
cooler rock rises and hotter rock sinks.
B.
hotter rock rises and cooler rock sinks.
C.
hotter and cooler rock sink but do not rise.

Answer 1

C. The hotter rock rises and the cooler rock sinks

Heat rises and as the warmer rock gets further away from the superheated center of the Earth it begins to cool off and starts to sink back toward the superheated center of the Earth where it is reheated and the whole process starts over again. That is what a convection current is.

Step-by-step explanation:

Answer 2

In the Earth's mantle, heat is transferred in large convection currents. Within these currents "hotter rock rises and cooler rock sinks".

Option B

Step-by-step explanation:

Heat rises occur and the hotter rock gets farther away from the Earth's overheated core it starts to chill out and continues to sink back towards the Earth's overheated center where it gets reheated and also the entire procedure begins again. It's what a current in convection is.

Convection currents are part of what keeps the Earth's atmosphere through global circulation. The convection currents contribute to conditions in the air and sea. Magma travels in convection currents at Earth's mantle. The hot cores heat the above substance, allowing it to rise to the crust where it cools.