what is plate tectonics theory?

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  • what is plate tectonics theory?


Answer #1 | 11/12 2013 11:32
It's not a theory. Plate tectonics is the name given to the way major parts of the earth move around very slowly. Where they collide, they can cause mountain ranges to rise up (e.g. the Rockies, the Alps). Where they move against each other, they create fault lines (e.g. San Andreas fault in California). Where one tectonic plate is pushed below another plate, the one that sinks down (subducted) can get heated up by the earth's core and rise up as magma which may reach the surface as a volcano. Where tectonic plates pull apart, magma is able to reach the surface to solidify into new crust.
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