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required for a fault to move—the amount of friction.) Emphasize
that different faults can store different amounts of energy before
they fail. Some faults have the potential for generating larger
earthquakes than others.
Q
Do the rubber band and string go totally slack after each movement?
(No.) What does this tell you about the release of stored energy on a
fault when an earthquake occurs? (No earthquake ever releases all
the energy stored in the Earth at a particular point. It is because
some stored energy always remains that one quake may have
numerous foreshocks and aftershocks, and earthquakes recur
frequently in some active areas.)
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