What does the theory of plate tectonics state?

1 Answer
Aug 12, 2017

It states that the earth's crust is not uniform


The theory states that the earth's crust is divided into massive slabs known as tectonic plates.These plates move on the mantle which is a layer made of magma, which consists of semisolid rocks.The heat from earth's core causes convection currents much like in a beaker full of water.But, here the force developed by the magma is so great that it slowly moves the plates like boats on sea over millions of years.