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Author Question: Sketch a cross-sectional view of Earth's interior, and label each of the layers you depict. What ... (Read 71 times)

Mollykgkg

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on: Jul 14, 2018
Sketch a cross-sectional view of Earth's interior, and label each of the layers you depict.
 
  What will be an ideal response?

Question 2

Describe the steps you would go through to determine the source of an earthquake, provided you had access to three seismographs that recorded the event.
 
  What will be an ideal response?


wergv

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Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: I'd expect some variation on this diagram from the text:

Answer to Question 2

Answer: First I would measure the amount of time that elapsed between the arrival of the first P wave and the arrival of the first S wave on seismogram 1. Then I would use the chart showing P and S wave travel times versus distance to determine the distance from seismogram 1 to the epicenter. Then I would repeat that with seismograms 2 and 3. Finally, I would triangulate the distances, using three circles of different radii, and the point where all three circles intersect would be the epicenter.


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