Plate tectonics is a scientific theory that describes the large scale motions of Earth rsq...........

Explanation:

Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Tectonic plates are able to move because the Earth’s lithosphere has greater strength than the underlying asthenosphere. The outer shell of the earth, the lithosphere is broken up into tectonic plates. The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate. Along convergent boundaries,subduction carries plates into the mantle.