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__Dynamic Earth__
The three plate boundaries are convergent, divergent, and transform boundaries.



1. __Convergent Boundaries:__
Plates are made of crust. Convergent boundaries are formed when a plate collides with or dives under another landmass (subduction). When an overlying plate lifts up, it forms mountain ranges. Convergent boundaries form in three different ways. An oceanic and oceanic plate can hit and form a trench, an oceanic plate and continental plate can collide, usually to form a trench, or a continental plate and a continental plate can form to create a mountain. The Euarsian Plate and Indian Plate collided to form the Hilmalayas, the tallest mountain range in the world. Also, the Mariana Trench was created when a continental plate and oceanic plate were forced together when hot magma rises from underneath the crust. Lastly the Washington-Oregon Coastline was formed when the Juan de Fuca oceanic plate dove under the North American continental plate.

Citations: [] []
 * "Plate Techtonics." //National Geographic.// N.p., n.d. Web. 6 Nov. 2009.
 * [[image:divergent2.jpg width="271" height="265" align="right"]]"Convergent Plate Boundaries." //Geology.// N.p., n.d. Web. 7 Nov. 2009.

2. __Divergent Boundaries:__
A divergent boundary is created when magma rises and pushes two plates apart. This usually takes place in the ocean. Mountains and volcanoes rise along​ the seam where the plate​s are pushed apart. This process "renews" the ocean floors and widens the giant basins. The Mid Atlantic Ridge is an example of a divergent boundary because Africa and South America were once joined. However, the two continents split apart, and water rushed to fill the open space where the continents had once been connected. Also the Great Rift Valley was created when two plates were pulled apart from each other. Hypothesis states that if the plates continue to diverge, millions of years from now eastern Africa will split from the continent and form a new landmass. Lastly, the Red Sea Rift is a completely developed rift becuase the plates have fully separated.

Citations:
 * "Divergent Plate Boundaries." //Geology.// N.p., n.d. Web. 6 Nov. 2009.[].

**3. __Transform Boundaries:__** Transform boundaries form when two plates grind past each other along strike-slip faults. However, they do not form mountains. The Alpine Fault, located in New Zealand, was created as it slid between continental rocks about 25 million years ago. Along with the Alpine Fault being a transform boundary, The San Andreas Fault is also one. It was formed in California when the Pacific Plate and North American Plate grinded together, causing earthquakes around the boundary. In 1906, San Francisco was destroyed by a large earthquake, triggered by a transform boundary because of the halting motion.

** Citations: **
 * //The Alpine Fault//. N.p., n.d. Web. 11 Nov. 2009. []
 * "Transform Plate Boundaries." //Geology.// N.p., n.d. Web. 6 Nov. 2009. [].

