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Our Dynamic Earth

There are three types of boundaries. The three types are Divergent, Convergent, and Transform.

Divergent: For it to be a divergent boundary magma must rise and push two or more plates away from each other. On land, huge trenches form where plates are tugged apart. In the oceans magma from deep in mantle rises like when the South American and African Plates made the Mid-Atlantic Ridge. On Land they make large ditches from where plates are tugged apart.

Convergent: For it to be a convergent boundary plates must collide with each other or dives under the other. At the ocean a plate will dive underneath and create huge trenches like when the North American Plate and the Juan de Fuca Plate made the Washington- Oregon coastline. On land they could create huge mountains like the himalayas. If it does dive under it would have to be about 100 miles deep for it to melt.

Transform: For it to be a transform boundary two or more plates must grind against each other. This could create huge faults like wen the North American and Pacific Plates made the San Andrea's Fault. It could also give off a lot of large earthquakes. Most transform boundaries are in ocean basins.

Citations:

"The Dynamic Earth." //http://science.nationalgeographic.com//. National Geographic Society, 2009 Web. 9 Nov. 2009. .

"Geology and Earth Science ." //Geology.com//. Geology.com., 2009 Web. 9 Nov. 2009. .

//Convergent Plate Boundary: crustal generation and destruction //. Encyclopedia Britannica. //Encyclopedia Britannica // . Web. 4 Nov. 2009. <[]>.

elosoenpersona,. //Ghandrava Chuli //. 2007. //Flickr //. Web. 3 Nov. 2009. <[]>. //Divergent Boundaries //. //Plate Tectonics and Volcanos //. Web. 4 Nov. 2009. <[]>

Degginger, Phil. //Mauna Loa //. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Encyclopedia Britannica //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. Web. 4 Nov. 2009. <[]>. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">An Aerial View of the San Andreas Fault in the Carrizo Plain, Central California //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">How Earthquakes Happen //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. Web. 4 Nov. 2009. <[]>.

<span style="font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">//<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Transform Boundary //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Nature Gallery (Earth) //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. Web. 4 Nov. 2009. <[]>.