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- 1. Multiple-choice30 seconds1 pt
A seismic station recorded the

*P*-waves, but no*S*-waves, from an earthquake because*S*-waves wereabsorbed by Earth's outer core

transmitted only through liquids

weak and detected only at nearby locations

not produced by this earthquake

- 2. Multiple-choice30 seconds1 pt
A seismic station recorded the

*P*-waves, but no*S*-waves, from an earthquake because*S*-waves wereabsorbed by Earth's outer core

transmitted only through liquids

weak and detected only at nearby locations

not produced by this earthquake

- 3. Multiple-choice30 seconds1 pt
Seismic station

*A*is 5000 kilometers from the epicenter. What is the difference between the arrival time of the first*P*-wave and the arrival time of the first*S*-wave recorded at this station?2 minutes 20 seconds

6 minutes 40 seconds

8 minutes 20 seconds

15 minutes 00 second

- 4. Multiple-choice30 seconds1 pt
If a seismic station is 3200 km from an earthquake epicenter, which is the time needed for an

*S*-wave to travel from the epicenter to the seismic station?4 min 40 sec

6 min 0 sec

10 min 40 sec

11 min 10 sec

- 5. Multiple-choice30 seconds1 pt
How long after receiving the first P-wave from an earthquake centered 4000 kilometers away does a seismic station receive its first S-wave from the same earthquake?

1 minute

5 minutes 35 seconds

7 minutes

12 minutes 40 seconds

- 6. Multiple-choice30 seconds1 pt
A P-wave takes 5 minutes to travel from the epicenter of an earthquake to a seismic station. Approximately how many minutes will it take an S-wave to travel that same distance?

15 min

12 min

9 min

4 min

- 7. Multiple-choice30 seconds1 pt
Which statement best explains why only one type of seismic wave was recorded at location

*B*?*S*-waves cannot travel through the liquid inner coreP-waves cannot travel through the solid outer core

*P*-waves cannot travel through the solid inner core.*S*-waves cannot travel through the liquid outer core - 8. Multiple-choice30 seconds1 pt
An earthquake occurs at 10:05 a.m. At 10:09 a.m., the first P-wave from this earthquake is detected at a seismic station. Approximately how many kilometers (km) from the epicenter is this seismic station located?

1000 km

2000 km

2600 km

5600 km

- 9. Multiple-choice30 seconds1 pt
A seismic

*P*-wave is recorded at 2:25 p.m. at a seismic station located 7600 kilometers from the epicenter of an earthquake. At what time did the earthquake occur?2:05 pm

2:11 pm

2:14 pm

2:36 pm

- 10. Multiple-choice30 seconds1 pt
A seismograph station recorded the arrival of the first P-wave at 7:32 p.m. from an earthquake that occurred 4000 kilometers away. What time was it at the station when the earthquake occurred?

7:20 pm

7:25 pm

7:32 pm

7:39 pm

- 11. Multiple-choice30 seconds1 pt
The seismogram recorded at station

*A*would show thearrival of

*P*-waves, onlygreatest difference in the arrival times of

*P*-waves and*S*-wavesarrival of S-waves before the arrival of P-waves

earliest arrival time of P-waves

- 12. Multiple-choice30 seconds1 pt
How long would it take for the first S-wave to arrive at a seismic station 4,000 kilometers away from the epicenter of an earthquake?

5 min 40 sec

7 min 0 sec

12 min 40 sec

13 min 20 sec

- 13. Multiple-choice30 seconds1 pt
In 8 minutes, an earthquake

*P*-wave travels a total distance of2,100 km

4,700 km

6,600 km

11,300 km

- 14. Multiple-choice30 seconds1 pt
The arrival time of the first earthquake

*P*-wave at a seismograph station was 10:11:20 (hours:minutes:seconds). If the epicenter of the earthquake is 8000 km away, what was the approximate arrival time of the first*S*-wave from this earthquake?10:02:00

10:09:20

10:20:40

10:32:00