Question

When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. These warmer rocks rise, while the cooler rocks sink. This movement of warmer and cooler mantle rocks creates pockets of circulation within the mantle called _________, which are thought to be the force behind the movement of tectonic plates over the asthenosphere.
A) magma flows
B) density cells
C) convection cells (currents)
D) conduction points

Answer 1

C) convection cells (currents)

Explanation:

The movement of warmer cooler mantle rocks creating a circulation within the mantle is called a convection cell. These are the forces that drives the plate over asthenosphere.

• Convection is form of heat transfer predominant in liquids and gases.
• The mantle is molten and heated from heat within the core and the decay of radioactive bodies.
• Hot bodies are light and tend to be more buoyant. This causes warm mantle to rise to the surface.
• The cold part are denser and heavier, they sink in the mix.
• This creates pockets of circulation pattern within the mantle called convection cells.

Learn more:

Lithosphere brainly.com/question/9582362

#learnwithBrainly