Meaning of name Dinesh. Etymology : Means day lord from Sanskrit (dina) day and (isha) lord. Saint :
A: The three primary causes for tectonic plate movement are the convection of material in the mantle, gravity and the rotation of the planet. These forces cause each of the seven major plates and numerous other microplates to move independently of the others at a rate of a few centimeters per year.
At the subduction zone, when the density of the plate increases, the plate tends to subduct more, and with its subduction it pulls the tectonic plates and hence drives its movement. The increase in density is because of the phase change of many minerals in the subducting tectonic plate. Hope this answers your question.