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Can you help me again. Im about to take an online quiz.

Resolved Question:

Can you help me again. I'm about to take an online quiz.
Submitted: 6 years ago.
Category: Homework
Expert:  GeologyTutor replied 6 years ago.
Yes.
Customer: replied 6 years ago.

ok, here we go. 30 min.

1. Question 1: Quakes and Friends

(Points: 2)
A minimum of how many seismic recording stations with seismographs are necessary to record an earthquake to determine its epicenter?

1. 1

2. 2

3. 3

4. 4

5. 5

2. Question 2: Materials

(Points: 2)
Earthquakes travel faster in denser materials, so if my home was built on loose, quaternary river sediments I would likely feel:

1. more shaking as the waves slow down and their amplitudes increase.

2. less shaking as the waves slow down and their amplitudes decrease.

3. a level of damage which depends on my location as seismic intensity decreases linearly with distance from the source.

4. only the surface waves as the P and S waves are filtered out by water in the ground.

3. Question 3: A Matter of Scale

(Points: 2)
The Mercalli and the Richter scales:

1. both measure quantitatively the intensity of an earthquake.

2. both involve interviewing a number of people affected by the earthquake over a large region.

3. differ in that the Mercalli scale is qualitative and the Richter scale is quantitative.

4. can both be used to glean information about earthquakes of magnitudes greater than 8.

4. Question 4: Using Your Knowledge

(Points: 2)
If we consider the seismogram (Fig. 16.3) at the top of page 307, and we know that the earthquake occurred 311 miles from your location, what was its magnitude?

1. 6.5

2. 7.4

3. 5.7

4. 6.8

5. It can't be determined.

Expert:  GeologyTutor replied 6 years ago.
Ok. I'll get right back to you.
Expert:  GeologyTutor replied 6 years ago.
Is there a figure for the last one?
Customer: replied 6 years ago.

Yes, but can't up load it but I need to know how to figure the magnitude of a earthquake and i measured the tallest line and it is 3 cm if that helps.

Expert:  GeologyTutor replied 6 years ago.

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