Convection in Earth's mantle is attributed to
A)sinking cold oceanic crust.
B)gravity and heat flow.
C)conduction of heat from Earth's core.
D)temperature differences between continental and oceanic crust.

Question

Quizplus · Accepted Answer

Convection in Earth's mantle is mainly driven by the combination of gravity and heat flow, with hot material rising and cold material sinking. This circulation plays a significant role in the movement of tectonic plates on Earth's surface. While sinking cold oceanic crust can contribute to convection, it is not the primary driver. Conduction of heat from Earth's core is also not the primary driver, as the mantle itself is the main source of heat for the convection. Temperature differences between continental and oceanic crust can also contribute, but again, they are not the primary driver.

Convection in Earth's Mantle Is Attributed to