plate tetonics

Plate tetonics is the theory that the plates of earth are moving. It is cool because it has alot of evidence supporting it. There is the mid-atlantic ridge, that is where the atlantic ocean is getting larger by spreading apart. There are alot of earthquakes around the ring of fire, this is the area around the pacific plate, it is shown here: this is called the ring of fire because this is where subduction occurs, this is when two plates collide and one plate goes under anouther plate and it melts in the mantle. then the mamga tries to escape and it escapes through a crack and this is a volcano and there is subduction is occuring all around the pacific plate.












There are many plates in the world. and at one time, millions of years ago, there was a supercontinent called Pangea. this was where all of the plates were connected and it looked like this: pangea was a huge landmass that existed millions of years ago. we have evidence of this because of the landmasses, like mountains and on right side of most moving plates. there is a mid-atlantic ridge that is spreading the atlantic and shrinking the pacific plate and this is from plates moving which is plate tetonics.

PANGEA