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__ Plate Boundaries __

//Convergent: When plates move into each other// They occur when land masses colide, the crust crumples and buckles into mountain ranges. The Eurasian Plate collided with the Indian plate, forming the Himalayas. The Andaes Mountain Range was formed when the Nazca plate subducted under the North American plate, causing volcanoes. At the Washington-Oregon coastline, the Juan De Fuca plate subducts under the North American plate. This causes volcanoes.

//Divergent: Where plates move apart// In the ocean magma rises towards the surface and pushes apart two or more plates. On land, giant troughs (or cracks) form where plates are tugged apart. In Iceland, volcanoes grow all the time. This happens because the North American and Eurasian plats spread apart. At the Mid-Atlantic Ocean Ridge, the African and South American plates move away from each other. This creates new crust, which makes new ridges. The African and Antarctic plates seperate, creating ridges in the ocean and along the Antarctic coast.

// Transform: Where pates move sideways in relation to each other Two plates grind past each other along what are called strike-slip faults, they usually trigger large earthquakes. The San Andreas Fault zone in CA, causes the most earthquakes in the U.S. It was created when the North American plate and the Pacific plate slide past each other. The African and Eurasian plate slidepast each other, creating a fault in the northern Atlantic ocean causing tsunaims. The Gulf of CA has transform faults that form the Cascadia subduction zone, where the North American and Pacific plates, cause earthquakes. //

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