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Running Head: PLATE TECTONICS
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Plate Tectonics
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PLATE TECTONICS
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Plate tectonic is a geological theory which simply explains that the surface of the
earth is broken down into different plates. This theory explains how the outer part of the earth
moves to form volcanoes, mountains, and earthquakes (Garfunkel, 1985). It generally
describes the earth processes. According to plate tectonics, these plates consist of lithospheric
matter which is found floating on the asthenosphere, the denser part of the interior of the
earth.
As the plates move apart, the liquid rock, also known as the magma from the
asthenosphere is pushed up from the centers of the deep bottom oceans. When the hot magma
comes into contact with the cold water from deep within the oceans, it rapidly cools down
forming a new solid crust, the lithosphere. As the time goes, these materials form the basalt,
which is a dense hard rock. In a series of processes, the magma tries to...