Mastering Geography: Earthquakes & Faults – Flashcards
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What type of fault is the San Andreas Fault?
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Right lateral fault
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Why might a tall building end up tilted on its side after an earthquake?
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Liquefaction
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Why might the Mercalli scale be considered qualitative and the Richter scale quantitative?
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The Mercalli scale emphasizes the relative impact on humans and the built environment, whereas the Richter scale considers total released energy.
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Which scale that is not a direct measure of magnitude is used to measure earthquake intensity?
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Modified Mercalli
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Which type of fault is shown? (diagonal, left side [hanging wall] going up & right)
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Reverse
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Which area is particularly noted for earthquakes?
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The Pacific Ring of Fire
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What does the red line in the block diagram illustrate?
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Fault
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Which statement describes a seismograph?
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A rotating paper-covered drum beneath a suspended weighted pen
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How has the study of earthquakes contributed to the identification of tectonic plate boundaries?
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Earthquakes occur along linear zones now designated as plate boundaries.
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What is the term for the point inside the crust where an earthquake originates?
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Focus
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Which are examples of secondary hazards of earthquakes?
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Fires, landslides, and tsunamis
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What is the term for a swarm of smaller earthquakes that follows a larger earthquake?
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Aftershocks
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Which feature is shown by the illustration? (hanging wall goes down)
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Normal fault
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How many seismographs minimum are needed to locate an earthquake epicenter?
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Three
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Which is an example of a fault with horizontal movement?
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Strike-slip fault
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What type of seismic waves are the fastest-moving compression waves?
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P waves
