Question 1

Explain the difference between earthquake magnitude and intensity.

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Question 2

Areas of the Mississippi Valley located in Southeast Missouri have seen historic earthquakes with magnitudes as great as those in California. Explain why a high magnitude earthquake in this area could cause more widespread disaster than in the west.

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Question 3

Explain what a blind thrust fault is and why it is dangerous to those who live near them.

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Question 4

Explain how seismologists locate the epicenter of any earthquake.

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Question 5

San Francisco, CA is home to many earthquakes. Explain why the area is prone to earthquakes. Much of the area is built on soft wet fine-grained sediment and they have tall buildings. Explain what kinds of hazards earthquakes might have on the region.

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Question 6

Earthquake prediction is an area of intense scientific research.

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Earthquake prediction is a complex and challenging field of study, with ongoing research efforts around the world. Seismologists and geophysicists use a range of techniques and technologies to try to forecast when and where earthquakes are likely to occur, and to develop better understanding of the causes and effects of these seismic events. While there have been some promising advances in this area of study, reliable earthquake prediction remains elusive, and scientists continue to work towards improving their methods and tools.

Question 7

The mayor of Peaceful, California (population = 300,000) has asked you to develop a comprehensive plan for earthquake mitigation in her community. During historic times Peaceful, which is located along the San Andreas fault, has experienced a few large, damaging earthquakes and many small earthquakes. Describe several specific measures that you would recommend as part of your mitigation plan.

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Question 8

It is possible to develop an earthquake warning system that would provide 15 - 60 seconds of warning to an urban area before the arrival of damaging earthquake waves if the earthquake occurred far enough away.

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This statement is true. Earthquake warning systems exist and can provide seconds to minutes of warning before the arrival of shaking waves, depending on the distance from the earthquake's epicenter and the speed of the seismic waves. However, such systems require advanced sensors and communication networks, as well as proper education and training of the public to respond appropriately.

Question 9

Describe the steps in the earthquake cycle.

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Question 10

Not all earthquakes are preceded by foreshocks.

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While some earthquakes are preceded by foreshocks, not all are. Some earthquakes occur suddenly, without any noticeable foreshocks.

Question 11

Explain how earthquakes may be beneficial to human interests.

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Question 12

Explain why fires are associated with earthquakes.

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Question 13

The probability of a major flood in any given year is the same whereas the probability of a major earthquake in any given year changes over time. Explain both how and why the probability of a major earthquake changes over time.

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Question 14

Explain what steps people should take to prevent personal disaster from a seismically active area.

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Quiz 3: Earthquakes