Plate Tectonics

Kael Castillo

Continental Drift and Pangea

Continental drift is the movement of the continents. This theory was invented by Alfred Wegener in 1915. Alot of evidence is here to prove one being Pangea. Pangea was a super continent that had all the continents put together in one. We know this is true because the continents fit together like puzzle pieces. More prove of Pangea is that similar fossils have been found on the coast of South American and Africa. Sea floor spreading is also proof of continental drift!

Earth Layers

The earth has three main layers the crust, the mantle, and the core. The crust has to layers the inner and outer crust. The crust is were the earths terrain is. The Mantle is made of semi molten rock called magma and it is bellow the crust.Above the mantle are the Plates. The core is a ball and is made mostly of nickle and iron. The plates move because of the convection currents generated in the core.
Big image
Big image

Plate Tectonics, Plate boundary types, and plate movement

Plate Tectonics is the theory that earth is divided into several plates. There are 12 main plates shown in the picture below. Plates have many different types of boundaries. The boundaries are divergent, convergent subduction, convergent collision, and transform.

Ring of Fire

This is were the a large number of earthquakes and volcanoes happen because of boundaries like transform and continental subduction
Big image