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.
Mantle. The mantle under the crust is about 1,800 miles deep (2,890 km). It is composed mostly of silicate rocks rich in magnesium and iron. Intense heat causes the rocks to rise. They then cool and sink back down to the core. This convection â with the consistency of caramel â is thought to be what causes the tectonic plates to move. When the mantle pushes through the crust, volcanoes erupt.