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P Wave And S Wave Travel Time
Test Description: Use your Earth Science Reference Tables when needed
Instructions: Answer all questions to get your test result.
1) How long will it take for the first S-Wave to arrive at a seismic station 4,000 km away from the epicenter of an earthquake?
A
12:40
B
13:20
C
7:00
D
5:40
2) The epicenter of an earthquake was 6,000 km away from a seismic station. What is the difference in travel time for the P-Waves and S-Waves?
A
7:35
B
9:20
C
13:10
D
17:00
3) What information can be determined using a single seismogram recording from an earthquake?
A
direction to the earthquake's focus
B
location of the earthquake's epicenter
C
distance to the earthquake's epicenter
D
depth of the earthquake's focus
4) An earthquake occurs at 10:05:00 a.m. At 10:09:00 a.m., the first P-wave from this earthquake is detected at a seismic station. Approximately how many kilometers from the epicenter is this seismic station located?
A
5400
B
2000
C
2600
D
1000
5) The first P-wave of an earthquake travels 5600 kilometers from the epicenter and arrives at a seismic station at 10:05:00 a.m. At what time did this earthquake occur?
A
10:02:00 a.m.
B
9:56:00 a.m.
C
10:14:00 a.m
D
9:49:00 a.m.
6) A seismic station recorded the P-waves, but no S-waves, from an earthquake because S-waves were
A
not produced by this earthquake
B
transmitted only through liquids
C
absorbed by Earth's outer core
D
weak and detected only at nearby locations
7) What is the approximate P-wave travel time from an earthquake if the P-wave arrives at the seismic station 8 minutes before the S-wave?
A
10 minutes 0 seconds
B
6 minutes 30 seconds
C
4 minutes 20 seconds
D
11 minutes 20 seconds
8) A strong earthquake that occurs on the ocean floor could result in the formation of
A
an ocean current
B
a delta
C
a tsunami
D
an El NiƱo event
9) Through which materials can P-waves travel?
A
solid rock, magma, water, and natural gas
B
solid rock, only
C
magma and water, only
D
magma, water, and natural gas, only
10) Which scale used for measuring earthquakes is based on recordings of the shaking produced by a seismograph?
A
The Richter Scale
B
the mercalli scale
C
The Ellis Scale
D
the Fujita Scale
*select an answer for all questions
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