Mod+2+-+Tyler+B

__**Transform boundar**__**y A transform boundary is two plates grinding against each other.Transform boundries are the mos common cause of earthquakes such as the 1906 earthquake that devistated San Fransico. The reason why San Fransisco was hit so hard is because 80% of all earthquakes acurr along the rim of the pacific ocean. __Convergent boundary__ A convergen boundary is when a plate colides with or dives under another plate. Where plate colide it causes it to crumple and buckle and then it pushes up forming mountains. The Asia and India colided almost 55 milion years ago forming the himalyas. The tallest mountain in their is mount everest. The pacific plate is converging with south america. __Divergent boundar__** A divergent boundary is when magma rises and pushes plates apart. Magma can push one or more plates as a time. 90% of all volcanoes are in the ring of fire. 19000 volcanoes are active on earth. the north american plate and thpacific plate make up the aleutian islands. The nasca plate and thesouth american plate make up the ande mountains. "plate tectonics." //national geographic//. national geographic society, 2009. Web. 13 Nov. 2009.
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