Define Plates And Tectonics.What Is Plate Tectonics?

Define plates and tectonics.What is plate tectonics?

 

Explanation:

a theory explaining the structure of the earths crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earths lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.