Mod+1+-+Janelle+W

> Millions of years ago the Earth's contients were one super continent called Pangaea. Today, the continents are spread across the oceans and are their own continent. You ask "How did they move?" Well the answer is that the plate tectonics moved, they grinded and shiffed from millions of years, moving the land about an inch a year.
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 * Their are different plates names like the Caribbean Plate, the African Plate, The Australian Plate, and other major contients.There are also different plate boundtries. One is **// __Convergent Bounderies.__ Convergent bounderies are when plates serving landmasses collide, and the crust crumples and form into mountain ranges. After a while the mountains continue to grow and get higher. If these plates collide underwater, they may lead to underwater volcanoes. An example is Mount Everest and the Andes of South America. //**

 __//**D**////**ivergent**//__ //**__Bounderies__**//  are plates in the oceans, where magma from deep down in the Earth's mantle rises towards the surface and pushes apart two or more plates. This causes volcanoes and mountains. At divergent boundaries in the oceans, magma from deep in the Earth's mantle rises toward the surface and pushes apart two or more plates. Mountains and volcanoes rise along the seam. The process renews the ocean floor and widens the giant basins. A single mid-ocean ridge system connects the world's oceans, making the ridge the longest mountain range in the world. On land, giant troughs such as the Great Rift Valley in Africa form where plates are tugged apart. If the plates there continue to diverge, millions of years from now eastern Africa will split from the continent to form a new landmass. A mid-ocean ridge would then mark the boundary between the plates.

  
 *  The San Andreas Fault in California is an example of a **T**  **ransform Boundary**, where two plates grind past each other along what are called strike-slip faults. These boundaries don't produce spectacular features like mountains or oceans, but the halting motion often triggers large earthquakes.

 
 * ==**"Plate Tectonics." National Geographic. National Geographic, n.d. Web. 17 Nov. 2009. <[]>. **==
 * ==**<span style="color: #ff7800; font-family: 'Comic Sans MS',cursive;">Plate Tectonics. N.p., n.d. Web. 18 Nov. 2009. <[]>. **==
 * ==**<span style="color: #ff7800; font-family: 'Comic Sans MS',cursive;">National Geographic." Dynamic Earth. N.p., n.d. Web. 18 Nov. 2009. <[]>. **==