Mod+7.8+-+Shelby+D

** Convergent Boundary: ** Convergent boundaries collide into each other. When the plates collide into each other they can move up and can form mountains and volcanos. When the plates run into each other the magma in the mantle melts and can erupt out of the top of a volcano. All the plates move about only a centimeter each and every year and because they so little each year it takes millions of years for collision to happen. Examples of the convergent plates: Himalayas  Krakatau   Nevada del ruiz




 * __Divergent Boundary__**


 * Divergent plates move away for each other. **
 * when the magma rises it pushes the plates apart at the bottom of the ocean. **
 * the separating of the ocean floor renews it and volcanos and mountains grow in the seems **
 * new crust begins to form over the opening that was separated **
 * Examples: **
 * East African rift in Kenya and Ethioia **
 * Rio grande rift in mexico **
 * mid atlantic ridge **

Transform plates move side to side against each other.
 * __Transform Boundary:__**

transform plates cause oceanic fractures which are valleys on the ocean floor horoztally off set spreading ridges.

these fractures i the ocean floor are hundreds to thousands kilometers long.

Examples: clarion

pioneer

molokai

Citation Maker

"tectonic plates." Web. 12 Nov. 2009. .

"Convergent plates." Web. 13 Nov. 2009. .

"divergent plates." Web. 13 Nov. 2009. .