Mod+3+-+Jacquelyn+E

__Dynamic Earth__

There are three different types of boundaries. There is the Divergent boundary, Convergent boundary, and Transform boundary. The person that was said to have noticed the plate tectonics and made a hypothesis about it was named Alfred Wegener. The first boundary is the Divergent boundary. In this boundary the magma rises up from underground and pushes the plates apart.As the plates separate, cracks occur which are immediately filled with molten rock that comes up from the asthenosphere. This hot material cools and creates a new seafloor. As a result, new oceanic crust is continuously being created between the diverging plates. One example of a Divergent boundary is the boundary between the Pacific and Antarctic Plates. The next boundary is the Convergent boundary.In this boundary a plate collides with or dives under another. The boundary between the Eurasian Plate and the Indian Plate is a good example of a Convergent boundary. The las type of boundary is the Transform Boundary. This boundary is when two plates grind against each other in opposite directions. For example, the boundary between the Pacific Plate and the North American Plate in California uses this concept.

__Citations__ 
 * sharonyau1995, . //Convergent Boundaries //. 2009. //Flickr //. Web. 3 Nov. 2009. <[]>.


 * //Continent Continent Collisions //. 1984. Merrill Publishing Company. //Earth System I: Geological Environment //. Web. 4 Nov. 2009. <[]>.


 * //Divergent Boundaries //. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Plate Tectonics and Volcanos //<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;"><span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Ray.huo29, . //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">plate_tectonics //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. 2009. //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">Flickr //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 14px;">. Web. 3 Nov. 2009. <[]>.


 * Tectonic plates of the earth.. IRC. 2005.

Discovery Education. 3 November 2009 <[]>


 * <span style="color: #333333; font-family: times,helvetica; font-size: 16px; line-height: 18px;">//national geographic//. national geographic system, 1999. Web. 1 Jan. <nationalgeographic.com>.

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 * "Dynamic Earth." Annenberg Media, 1997. Web. 1 Jan. 1997. <http://www.learner.org/interactives/dynamicearth/drift.html>.