How do the convection currents move the Asthenosphere?

Convection currents in the Earth's mantle, particularly in the asthenosphere, occur due to the heat from the Earth's core causing the mantle material to heat up, become less dense, and rise. As this material reaches the upper mantle, it cools, becomes denser, and then sinks back down. This cyclical movement creates a flow pattern that drives the movement of tectonic plates above the asthenosphere. Consequently, the convection currents play a crucial role in the dynamics of plate tectonics and the geological activities associated with it.