New York Science Grade 7

Chapter 7: Earthquakes and Volcanoes

P wave Travel Time

1
P-waves travel at 8 km/s in the upper mantle. Calculate the time it takes P-waves to travel 200 km in the upper mantle.
A)25 s
B)12.5 s
C)50 s
D)43.75 s
2
P-waves travel at 6 km/s in the crust. Calculate the time it takes P-waves to travel 150 km in the crust.
A)25 s
B)12.5 s
C)30 s
D)41.7 s
3
P-waves travel at 8 km/s in the upper mantle.Calculate the time it takes P-waves to travel 350 km in the upper mantle.
A)43.75 s
B)15 s
C)25 s
D)41.7 s
4
P-waves travel at 6 km/s in the crust. Calculate the time it takes P-waves to travel 250 km in the crust.
A)41.7 s
B)12.5 s
C)33.3 s
D)43.75 s
5
P-waves travel at 8 km/s in the upper mantle. Calculate the time it takes P-waves to travel 100 km in the upper mantle.
A)12.5 s
B)17 s
C)25 s
D)40 s
6
P-waves travel at 6 km/s in the crust. How long will it take a P-wave to travel 200 km in the crust?
A)33.3 s
B)12.5 s
C)25 s
D)41.7 s
7
P-waves travel at 8 km/s in the upper mantle. How long will it take a P-wave to travel 150 km in the upper mantle?
A)18.75 s
B)15 s
C)25 s
D)33.3 s
8
P-waves travel at 6 km/s in the crust. How long will it take a P-wave to travel 220 km in the crust?
A)36.7 s
B)12.5 s
C)25 s
D)33.3 s
9
P-waves travel at 8 km/s in the upper mantle. How long will it take a P-wave to travel 440 km in the upper mantle?
A)55 s
B)25 s
C)45 s
D)75 s
10
P-waves travel at 6 km/s in the crust. How long will it take a P-wave to travel 440 km in the crust?
A)73.3 s
B)55 s
C)78.3 s
D)45 s
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