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Convergent Boundaries is when a plate collides with or dives under another. Where plates serving land-masses, the crust crumples and buckles into mountain ranges. Oceanic-Continental convergence when ocean plates pushes into a sub-duct. Oceanic-Oceanic Convergence when two Oceanian plates convergence results in undersea volcanos. Continental-Continental convergence when two continents meet head in neither is sub-ducted because the continental rocks are relatively light. About 55 million years ago the Asian plate crashed in to the Eurasian plate witch slowly risen to the Himalayan Mountains. Another example is starting some 80 million years ago when the outlying continental fragments of the African Plate collided with the Eurasian Plate and created the European Alps. Another example is t he Philippine plate rather consists of several micro-plates - squeezed in between two convergent plate margins



Transform boundaries are two plats that grid past each other. There called strike-slip faults. Transform boundaries do not produce spctacular features like mountians or oceans. The halting motion often triggers large earthquakes. The San Andrea's fault is an example of a transform boundary. The Puerto Rico Trench is an example of transform boundaries it is located between the Caribbean Sea and the Atlantic ocean. Another Example is the 1906 earthquake that hit San Francisco.  Divergent boundaries when two plates push apart. Magma from deep in the Earth's mantle rises toward the surface. Mountains and Volcanoes rise along the seam. The process renews ocean floor and Widens the giant basins. When this happens on land giant troughs such as the great valley in Africa. Mid-ocean ridge marks boundiries between the plates. New crust is created. When this occurs on land a rift will arise and over time that mass of land will break apart into distinct land masses and the surrounding water will fill the space between. An example of divergent boundaries is The Giant crack in Africa. The Crack is 20 feet wide and 35-miles long is located in the desert of Ethiopia. The plates are pulling apart and will likely eventually become a new ocean. The same rift is slowly parting the Red Sea. Another Example is The North American Plate and the Eurasian plate are pulling apart. "Plate Tectonics." //http://science.nationalgeographic.com//. Web. 18 Nov. 2009. . "Giant Crack in Africa Will Create a New Ocean." //http://news.yahoo.com//. Nov. 2009. Web. 18 Jan. . "Caribbean Plate." //http://whatonearth.olehnielsen.dk//. Web. 13 Nov. 2009. . "Plate Boundaries." //http://www.platetectonics.com//. Web. 16 Nov. 2009. .