The continental drift demonstrated how continents shift positions on the earth's surface It was discovered and developed in the early 20th century The continents are combined to form a single supercontinent In addition the continents lay on slabs of rocks called tectonic plates The term plate is referred as large rigid blocks of an earth surface that moves together The theory of plate tectonics is the Earth's outer shell divided into several different plates that make a smooth continuous movement over the mantle All plates always remain moving interacting Even today the continental drift is still moving worldwide Evidence for and arguments against this theory Some arguments that were against the theory of continental drift was the lack of speaking on the theory of mechanism and how it works Scientists did not accept Wegener's theory of continental drift