Mod+7.8+-+Connor+P

Dynamic Earth

Divergent Boundaries Divergent boundaries are in the ocean that when magma in the mantle rises and pushes two or more plates apart, sometimes they are caused by underwater volcanos. These boundaries can cause big valleys like the Great Rift Valley. They can also form large mountains and volcanos in the earth. The African plate and the Pacific plate are an example of two plates that moved apart from each other to form a divergent boundaries. Convergent Boundaries Convergent boundaries are when two plates collide with one another or when one plate dives under another. The Himalaya Mountains were formed by a convergent boundary. This boundary can also cause trenches like the Mariana Trench in the North Pacific Ocean. The Phillippine plate and part of the Nasca plate are examples of plates that formed a convergent boundary. Transform Boundaries Transform boundaries are when two plates grind against each other in any direction. This boundary can cause huge earthquakes and form faults in the Earth, for example, the San Andreas Fault in California, and the 1906 earthquake in San Francisco, California Parts of the Eurasian plate and the Australian plates are examples of two plates that formed a transform boundary. Citations

//National Geographic//. National Geographic, 2009. Web. 10 Nov. 2009. .