The theory of plate tectonics

Plate tectonic theory is all the plate move different direction.  Another word for plate is crust. Crust is the surface of the earth, which we called lithosphere. There are two different types of crust, continental crust and oceanic crust. These crusts create different movement and the movement creates many beautiful features and also many unforgettable disaster.
Plate's movement can cause by earthquake and tsunami, for example，earthquake that happen in 2012 japan, was transform boundary on continental crust and continental crust cause many building destroy and deaths. Also tsunami at a subduction zone in Indian ocean in 2004, cause many people lost their lives and many small islands were drown. These both evidence shows transform boundary are mostly nightmare.

There is also a movement that pushes land together called convergent boundary.Convergent boundary had created many mountains, for examples: Himalaya mountain and Kunlun mountain were both mountains that create by convergent boundary. They were built by two-plate push together and form mountains.

Divergent boundary is another movement of the plate tectonics, divergent boundary creates many features. Rift valley and mid-ocean ridge are both created by divergent boundary, rift valley is only create when continental crust and continental crust divergent, but mid-ocean ridge is create between oceanic crust and oceanic crust divergent, so the magma is hardened and become ridges. One example of rift valley is that divergent boundary happen 3 million years ago between the land of California and Nevada create a valley as now we named “death valley”. Another example of divergent boundary is divergent happen in Huang Shan area, there were sea, and which after many divergent movement create mid- ocean ridge.

In conclusion,  I agree with the theory of plate tectonics, Because the plate still changing every years, and every year, many earth quake and tsunami happened in different subduction zone, witch proves how the crust is moving in different ways.