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Discuss what is the richter magnitude of the earthquake

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Reference no: EM131676577

(1) From the seismograms, what is the time lag between the arrival of the P-waves and arrival of the S-waves at the Anchorage seismograph station?
(a) 1 minute
(b) 3 minutes
(c) 4 minutes & 20 seconds (d) 5 minutes & 20 seconds (e) 6 minutes & 20 seconds

(2) From the seismograms on Figure B, what is the time lag between the arrival of the P-waves and arrival of the S-waves at the Ottawa (Canada) seismograph station?
(a) 1 minute
(b) 3 minutes
(c) 3 minutes & 40 seconds (d) 4 minutes & 40 seconds (e) 5 minutes & 20 seconds

(3) From the seismograms, what is the time lag between the arrival of the P-waves and arrival of the S-waves at the Los Angeles seismograph station?
(a) 1 minute
(b) 1 minute & 40 seconds (c) 2 minutes & 20 seconds (d) 3 minutes
(e) 3 minutes & 40 seconds

(4) On the basis of these travel times, which seismograph station was closest to the earthquake epicenter?
(a) Los Angeles
(b) Ottawa
(c) Anchorage
(d) They were all the same distance from the epicenter
(e) There is not enough information given to assess the relative distances.

(5) From the P-S arrival lag times answered in questions (1) through (3) and the P- & S-wave travel time graph of Figure C, what is the approximate distance between the Anchorage station and the epicenter of the earthquake?
(a) 1000 km (b) 2800 km (c) 3800 km (d) 4600 km (e) 5600 km

(6) From the P-S arrival lag times answered in questions (1) through (3) and the P- & S-wave travel time graph of Figure C, what is the approximate distance between the Ottawa station and the epicenter of the earthquake?
(a) 800 km (b) 1800 km (c) 2600 km (d) 3400 km (e) 5500 km

(7) From the P-S arrival lag times answered in questions (1) through (3) and the P- & S-wave travel time graph of Figure C, what is the approximate distance between the Los Angeles station and the epicenter of the earthquake?
(a) 400 km (b) 1000 km (c) 1600 km (d) 2400 km (e) 3000 km

(8) On the basis of the information provided in the previous answers, use a circle-drawing compass and the map in Figure A to determine which of the following cities is closest to the epicenter of the earthquake?
(a) San Francisco (b) Juneau
(c) Boise
(d) Salt Lake City (e) Albuquerque (f) Thunder bay (g) Churchill
(h) Monterrey,Mexico (i) Mexicalli, Mexico
(j) Memphis

(9) From the information in the previous questions determine the approximate time at which the earthquake actually occurred.
(a) 10:58 (b) 10:59 (c) 11:00 (d) 11:01 (e) 11:02 (f) 11:03 (g) 11:04

(10) A seismometer located 300 km from the epicenter of an earthquake records a maximum amplitude seismic wave of 1 mm. What is the Richter magnitude of the earthquake?
(a) 3.0 (b) 3.5 (c) 4.0 (d) 4.5 (e) 5.0 (f) 5.5 (g) 6.0

Reference no: EM131676577

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