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Plate Techtonics

Convergent Boundaries Divergent Boundaries
 * It happens when a plate dives or collides with an other plate.
 * An example is the Andes Mouuntains. An oceaantic plate formed with a continental plate.
 * An other example is the Himalayas. They formed when India collided. They both went up because of there giant landmasses.
 * When magma rises and pushes plates apart.
 * Volcanoes rise along the seam of the boundaries.
 * One example is the great rift valley in Africa.
 * That happened vecause the Somali plate and African plate have pushed togther and created the great Afirican plate.

Transform Boundaries The San Andreas plate
 * This is when two plates grind aginst each other
 * They often form earthquakes instead of volcanoes or mountains.
 * An example is the San Andreas Fault in California. The Norrth American plate and the Juan de Fuca plate caused this.
 * An example is thePuerto Rican trench. Its from the North American plate and the South American plate.[[image:sanandreas3.jpg.gif width="295" height="412"]]

"Plate Techtonics." Science and Space. National Geographic Society,1996. Web. 29 November 2009. 