The Theory of Plate Tectonics

This article of the theory of plate tectonics is very interesting and is a very good article that helped me with a lot of the things on my test. Plates are broken sections in the lithosphere, and the theory of plate tectonics is the theory that the earths are broken in to plates that move and slide every year which eventually create our mountains and valleys.  Geologists think that convection currents in the mantle are causing the plates to move! The thing that i found interesting is the the plates now have moved and created our continents but 225 million years ago the plates were together, a whole super continent this time was called Pangea.  Earth has three types of plate boundaries which are called Divergent boundaries, Convergent boundaries and Transform boundaries. What happens in divergent boundaries is when two plates move apart causing rift valleys on land but in water it causes the sea floor to move apart. In Convergent boundaries two plates come together causing mountain ranges. Lastly in Transform boundaries is where the crust is neither created or destroyed as the plates slide horizontally past each other.