Mod+2+-+Jacob+L

=Dynamic Earth= = = = = = = =Divergent Plate Boundary= Divergent plate boundaries usally are surounded by volcanos. The plates are pushed apart by hot molten magma. As the magma fills the cracks between plates it pushes the plates apart. A prime example of this would be the ring of fire which is a strand of volcanos that lies on plate bourndries in the Pacific. Magma is melted rock that flows under ground. When a volcano erupts plates are usally involved.



=Convergent Plate Boundary= This occurs when one plate collides with or dives under another plate. This is a common cause of earthquakes. Over time mountains can form through this process. Imagine a peanut butter and jelly sandwich that is cut in half. Then take the two halves and push them together. What happens? What should happen is that the two should form into a bump or a "mountain". A perfect example of this would be Mount Everest in Nepal. This giant of a mountain, known as the largest in the world, was formed through many many years of two plates pushing together. These plates are known as the Eurasian Plate and the Indian Plate. Plates can also dive under each other as well.



=Transform Plat Boundary= This type of plate boundary is another cause of earthquakes. It occurs when two plates begin to slide past each other in opopsite directions. Each plate won't let the other move this creates a crack and is known as a fault. The most famous of these is the Sanan Drais Fault. This is why California has earthquakes all the time. They have two major plates grinding together so much that some day Califorina will be close to Alasaka but that won't be for a long time. In the early 20th century there was a great earthquake that shook Sanfransisco so much that the National Gaurd was called in to resastaine order. Plates can be very interesting to study but they also can be very dangerous. The world is changing every day sometimes for the better, some times for the worst.



citations [|National Geographic] 1996-2009 National Geographic Society Dates Used 11/5/09-11/6/09-11/9/09 []