Its floating on a liquid.
as the subducting plate skins into the mantle, friction between the mantle and lithosphere will oppose plate motion.
The mantle is the Earth's crust. Mantle dynamics are caused by the heating and cooling of this layer of crust. This heating and cooling causes a slow creeping motion in the Earth's rocky mantle.
convection cells in the mantle
Hand drawn animation cels for stop motion animation.
Convection currents in the mantle
Mantle convection is the slow motion of the Earth's silicate mantle, caused by convection currents that carry heat from the interior to the surface of the Earth. Mantle convection causes the tectonic plates to move around the Earth's surface, causing earthquakes, tsunamis, and volcanic activity.