Chapter 8: Earthquakes – Flashcards
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How does the elastic-rebound theory explain the occurrence of earthquakes?
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When bending rocks fail, the stress energy releases in the form of earthquakes
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What is one of the differences between body waves and surface waves?
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Body waves are described as compressional or shear
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Which of the four types of seismic waves are body waves?
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P & S Waves
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Which of the four types of seismic waves are surface waves?
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L & R Waves
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Long-term earthquake predictions are based on which of the following?
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Seismic Zones and Recurrence Intervals
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Shear Waves can be modeled by
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Sinusoidal Curves
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Particle motions produced by a compressional wave can be modeled by
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Spring Motion
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A tsunami
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may be just a low and very broad wave at sea but both slows in speed and grows in height as it approaches shore
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T/F: Although the risk is small, disastrous earthquakes can happening regions that are not seismic zones
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True
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T/F: Earthquakes DO NOT occur at depths greater than about 100km (60 miles)
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False
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T/F: The Richter Scale measures the size of a quake in terms of the damage it does (intensity)
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False
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Earthquakes most commonly occur at
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plate boundaries
