Plate Tectonics volcanoes and earthquakes September 22

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A plate boundary where two plates move away from each other is called

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Divergent Boundary

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Scientists hypothesize that a super continent existed 200 million years ago. This continent is called

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Pangea

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A Plate Boundary where two plates move toward each other is called

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Convergent Boundary

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Divergent Plate movement can create

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Rifts and ocean ridges

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vibrations in the earth caused by the sudden release of energy, usually as a result of the movement of rocks along a fault

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earthquake

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an earthquake wave that follows the main shock of an earthquake

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aftershock

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the location where the rupture of an earthquake begins and energy is released

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focus

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an instrument that detects, records, and measures the vibrations produced by an earthquake

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seismograph

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the record made by a seismograph; the paper on which earthquake waves are recorded

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seismogram

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the measurement of the total amount of energy released at the focus of an earthquake (measured by Richter Scale)

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magnitude