Mod+7.8+-+Evan+N

__Dynamic Earth

Divergent Boundary__
 * Occurs when magma rises up and separates two plates.
 * In the seam that it forms, volcanoes can form.
 * Single ocean ridges that form from these boundaries connect and form on e underwater ridge called the mid-ocean ridge.
 * The mid-atlantic ridge makes the longest mountain range in the world.
 * An exapmle of a divergent boundary would be near Iceland where the North American and the Eurasian plat split along the mid-atlantic ridge.
 * The East African rift is in Kenya and Ethiopia is caused by the African Plate and the Arabian Plate.
 * Rio Grande rift in New Mexico is caused by the Caribbean Plate and the North American Plate.



__Transform Boundary__
 * When two plates grind past each other.
 * Stopping usually causes earthquakes.
 * San Andreas Fault in California where the two parts of California are sliding in different directions.
 * The two plates causing the San Andreas fault are the North American plate and the Juan de Fuca Plate.



__Convergent Boundary__
 * Forms mountain ranges.
 * Indian and Eurasian plates collided 55 million years ago and created Himalayas.
 * Mountains created by convergent boundaries keep growing everyday.
 * Andes Mts. created when the Nazca and South American plates collided.



__Citations__ >
 * "Earthquakes." //Environment//. National Geographic, Web. 5 Nov. 2009. .
 * "Understanding Plate Motion." //USGS//. N.p., 5 May 1999. Web. 1 Jan. [].
 * "The Dynamic Earth." //National Geographic//. National Geographic, Web. 5 Nov. 2009. .
 * "Plate Teconics." //Earth Floor//. Wheeling Jesuit University, 28 Apr. 2004. Web. 11 Nov. 2009. .
 *  Spalding,, ed. //Earth Science//. Evanston, Il: McDougal Littell, Print.