In which direction does cooler mantle material generally move in a convection cycle?

Correct answer: Downward

The correct answer is option A, downward. The governing concept is convection caused by differences in temperature and density. When mantle material cools, it generally contracts slightly, becomes denser than the surrounding warmer material and tends to sink under gravity. Warmer material, in contrast, expands, becomes relatively less dense and rises, producing a circulating movement. This simplified model helps explain how heat is transferred within Earth’s mantle and how internal forces may contribute to plate movement. Eastward is a horizontal direction, and “toward the sky” does not describe mantle circulation. Thus cooler material moves downward.