11. Materials in the mantle move via convection currents. Which of the following explains how a convection current is generated?
Answer (1)
A convection current in the Earth's mantle is generated by the heating of materials at the mantle's lower part near the core, which become less dense and rise. As these hot materials reach the upper mantle, they cool down, become denser, and sink back down. This continuous cycle of rising hot material and sinking cooler material creates a circular flow called a convection current. This movement causes the mantle to slowly creèp and drives the movement of tectonic plates on the Earth's surface.
