Lecture on Plate Tectonics

Major purpose of this lecture is to present on Plate Tectonics. Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. Today plate boundaries are determined by examining; the location of volcanoes and earthquakes. Volcanoes result from the friction (heat) of the plates motion. Earthquakes occur where plate rub against one another