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=Plate tectonics= There are a few handfuls of major plates and dozens of smaller, or minor, plates. Six of the major plates are named for the continents embedded within them, such as the North American, African, and Antarctic plates. There are three types of plate movement. One movement is Convergent, where the plates move into each other. Another is Divernt, is where the plates move apart. And the last one is Transform, is where grind toghether. This is when two plates pull apart. They will make mountains and volcanoes along the seam. One example is in Afirca, in millions of years they will slit apart from each other two put Africa in half. Also in Afirca, from plate pulling apart they formed the Great River Valley. Another example is the great crack in Hawaii, in millions of years they will split apart and it will go to the bottom of the ocean and make a giant tsunami. Is when two plats grind past each other such as the North American Plate and the Juan De Fuca Plate. The slide past each other on a line called a fault, their is a famous fault line called the San Andres Fault in California. http://science.nationalgeographic.com/science/earth/the-dynamic-earth/plate-tectonics-article.html http://streaming.discoveryeducation.com/index.cfm http://environment.nationalgeographic.com/environment/natural-disasters/earthquake-profile.html http://science.nationalgeographic.com/science/earth/the-dynamic-earth
 * Convergent:** Where plates serving land mass collide, the crust crumbles and buckles into mountain ranges. India and asia crashed about 55 million years ago, slowly giving rise to the mountain system of the himalayas the highest point on earth. As they mash up continues, the mountains get higher. Mount everest, the highest point on earth, maybe a little bit taller tomorrow than it is today. These convergent boundaries also occur where a plate of ocean dives,in a process called subdontion,under a land mass. As the overlying lift up, it also forms mountain ranges. in addition, the dividing plate melts and it often spewed out in volcanos erupting such as those that formed. some of the mountains in the andres pf south america. An ocean-ocean convergences,one plate usually dives beneath the others, forming deep trenches like the mariana trench in the north pacific ocean. the deepest point on earth. These types of colisions can also lead to underwater volcanos that eventually build up.[[image:Convergentplateboundary1.jpg width="202" height="161"]]
 * Divergent Boundries**- magma from deep in the earth's mantle rises toward the surface and pules apart two or plates.