virtual Earthquake, environmental science assignment help

In this activity, you will be going to the “Virtual Earthquake” website where you will be doing a series of guided tasks related to locating the epicenter and determining the magnitude of an earthquake.  Print out or otherwise have these activity questions available to you before you click on the link below.URL:  http://www.sciencecourseware.com/VirtualEarthquake/VQuakeExecute.html

Choose the region “San Francisco area” for your simulation of an earthquake and click “submit choice”. 

What does the S-P interval represent exactly?  Choose the best answer below:

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Click on “View Seismograms” at the bottom of the page.  Choose the closest number that represents the S-P interval you got for each station (Questions 4, 5 & 6) below:

Question 4

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Eureka, CA:

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Question 5

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Elko, NV:

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Question 6

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Las Vegas, NV:

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Question 7

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Click on “Convert S-P Interval”.  Read the information on “Determining the Earthquake Distance”. 

It takes an S-wave approximately 70 seconds to travel 300 km.  How long does it take the P-wave to travel this same distance?  Choose the best answer below

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Use the S-P graph at the bottom of the webpage and the estimates you made for the S-P travel times for the three seismograms.  Choose the closest number that represents the closest distance in the space below:

Question 8

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Eureka, CA:

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Question 9

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Elko, NV:

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Question 10

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Las Vegas, NV:

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Question 11

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Type in your answers above into the boxes provided on the webpage and hit “Find Epicenter”.  The next screen will be a map showing circles.  What are these circles themselves individually depicting?

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Question 12

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Richter Magnitude

Read the section on “Magnitude Explained”.  What is the magnitude of an earthquake?  Choose the best answer from the choices below

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Question 13

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The Richter magnitude determination is based on measurements made on seismograms.  Two measurements are needed.  What are they?

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Click on “Go to next page”.  Read the information on the “Richter Nomogram” and then click on “Go to next page” again.  Measure the maximum amplitude of the S-wave for each seismogram and record your estimate in the box below the seismogram, then select the best answers from the choices (Questions 14, 15 & 16) below:

Question 14

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Eureka, CA:

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Question 15

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Elko, NV:

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Question 16

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Las Vegas, NV:

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Question 17

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The page shows a nomogram with three lines representing the data you provided.  Type in your estimate for the earthquake in the box provided on the webpage and click on “Confirm Magnitude”.  Choose the magnitude below that most closely represents the magnitude for this earthquake.

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