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When two plates collide straight one each other. There are three sub types. The first is continental, that is when they form mountains. The Himalayas are a example when the Indian plate collided with another 55 million years ago, which made Mt. Everest the highest point of the mountain.. Oceanic is another sub type,that is when they can form a volcano. A example is when the volcano erupted millions of years ago that made the Aleutian Islands, which is Japan. The final one is Ocean-Continent,they are when earthquakes happen. A example is the earthquakes in San Francisco, California, one happened in 1989 during the San Francisco Giants and Oakland Athletics.
 * Convergent** **Boundaries**- where plates serving land-masses collide, crust crumple-sand buckles into mountain ranges.



This is when two plates pull apart. They will make mountains and volcanoes along the seam. One example is in Africa, in millions of years they will slit apart from each other two put Africa in half. Also in Africa, from plate pulling apart they formed the Great River Valley. Another example is the great crack in Hawaii, in millions of years they will split apart and it will go to the bottom of the ocean and make a giant tidal wave.
 * Divergent** **Boundaries**- magma from deep in the earth's mantle rises toward the surface and pules apart two or plates.



This happens when two plates grind against each other. They slide and grind against each other. They form earthquakes on there fault line. One example of this happening is the San Andrea's Fault in California. In California earthquakes are happening because if the plates. Another example is the Australian Plate causing earthquakes and volcanoes. Another example is the Philippine Plate is makes earthquakes,it made the earthquake that made the tidal wave in the Philippines.
 * Transform Boundaries-When** two plates grind.



Bibliography

//•Divergent Boundaries//. //Plate Tectonics and Volcanos //. Web. 4 Nov. 2009. <[]>.

•"Plate Tectonics." //National Geographic//. Thin Layer Plates, Web. 12 Nov. 2009. [].

//•Philippines Tectonics//. 18 Nov. 2009. Web. 18 Nov. 2009. .

•sharonyau1995,. //Convergent Boundaries //. 2009. //Flickr //. Web. 3 Nov. 2009. <[]>.

//•Transform Boundary//. NASA. //Why isn't the earth perfect //. Web. 4 Nov. 2009. <[]>.