Wednesday, January 1, 2014

Plate tectonic theory


Question:Do you agree with the theory of plate tectonics?

 Plate Tectonics is one idea of Earth Science. Plate Tectonics say before 200 million years, Earth only had one land and that call "Pangaea" but now we has 7 lands, Why? because Plate are moving. Now Pangaea are divide by 7 part. When mantle are moving, plate are move together and that is create plate moving.

Some time Earth had big wave,  we call that Earth quake. But why Earth quake are happening? some time is cause by Faults, and some time it's cause by plate boundary. When plates moving, some time it's create big wave. this wave is Earth quake. So Earth quake is on big evidence. If plate are not moving, Earth quake are not happening.

see this diagram. This diagram show Africa and South America. This both land has same edge. and some time both land has same fossil. This mean before Africa and South America are one land but now they are be separated.

Now Plate are still moving but it's so slowly. Some scientist think after 250 million year Earthlook like this.イメージ 3 

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