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=Dynamic Earth Wikipedia=

Convergant Boundaries: Convergant Boundaries is the process when plates serving landmasses collide and the crust crumples and buckles into mountain ranges. One example of this process is when India and Asia collided/crashed 55 million years ago which created the Himalayas. The Himalaya system is the most common type of mountain formation, which is folded. The Himalayas extend 1,600 miles and for the earth's highest mountain region which contains nine out of the fourteen peaks in the world. Other mountain events are the Greenville, Taconic, Acadian, and the Alleghenian. Virginia is held most responsible for these events. The Appalachians are not considered "mountains" in a plate tectonic sense. They aren't considered mountains because they are formed from pre-existing mountains that may have been there millions of years ago. Convergant Boundaries have created one of the world's greatest mountain ranges.



Transform Boundaries: Transform Boundaries is the process of when two plates grind past each other along what are called strike-slip faults. The pressure builds and the plates snap. An example of a Transform Boundary would be the San Andreas Fault in California. This earthquake happened on April 18, 1906. Los Angeles is another example. It is supposedly told that Los Angeles will break apart from California and fall into the ocean. It will not really break apart and fall into the ocean. It will break apart slowly and gradually. Transform boundaries are very different from the other forms of boundaries because they have a more halting motion. This halting motion is one of the results of earthquakes. The earthquakes that are created are often formed near the fault zones. They also do not create any other land formations such as mountains or oceans. Transform Boundaries can also be a cause of tsunamis. There is a very high risk of tsunamis in Japan and the Philippines.

Divergant Boundaries: Divergant Boundaries is the process of when magma from deep within the Earth's mantle rises toward the surface and pushes apart two or more plates. This process renews the ocean floor and widens the basins.The seam created is where the mountains and volcanoes begin to form. One example of a Divergant Boundary is the Mariana's Trench. The plates that are involved are the Philippine, the Asian and the Pacific. Its deepest point is the challenger deep. Another exampleis the Rio Grande Rift in Mexico. It will not really break apart and fall into the ocean. It will break apart slowly and gradually. One single mid-ocean ridge system connects all the world;s oceans. This process is like two conveyor belts moving in opposite directions. The best known of the divegant boundaries is the Mid-Atlantic Ridge. It extends from the Artic Ovean to the southern tip of Africa. The spreading of this Ridge is about 2.5 centimeters a year.