Question

In order to complete a convection current, the rising material must eventually ____ Earth.

Answer 1

In order to complete a convection current, the rising material must eventually sink Earth.

Step-by-step explanation:

In order to complete a convection current, the rising material must eventually sink Earth.

Convection is a process in which hotter, less dense material rises and colder, denser material sinks. This transfer of heat through the movement of fluid is driven by the tendency of warmer material to rise and cooler material to sink under the influence of gravity.

For example, in the Earth's mantle, convection currents drive plate tectonics by causing the upward flow of warmer material and the slow downward sinking of cooler material.

Answer 2

sink back into Earth

When temperature differences exist, hot liquids rise and cold liquids sink. This creates convection currents. Convection currents transfer heat through the fluidity of water, air, or even hot magma. Convection currents develop when heated fluids expand. These fluids become less dense. The decrease in density causes the fluid to rise away from the original heat source. As the fluid rises, colder fluid is pulled toward the heat source and replaces the warm fluid. This fluid is then heated. It rises, and the process begins again. Convection currents establish a circular current that only ceases once the heat is evenly transferred throughout the fluid.