Plate tectonics theory is a theory explaining the structure of the earth's crust and many associated phenomena
There are 12 plates but 7 major plates
Plate tectonics is what explains the structure, composition and internal workings of the Earth on a worldwide scale, while continental drift refers to the theory that the continents all used to be connected in one mega-continent which scientists called it Pangaea.
The driving force behind plate tectonics is convection in the mantle. Hot material near the Earth's core rises, and colder mantle rock sinks
The are divergent and transform margins, subduction zones, or convergent margins, are the types of plate boundaries. .