Multiple Choice
The main reason that deep P and S seismic waves do not travel in straight lines inside Earth is that
A) Earth is spherical,and the waves follow the shape of the surface of Earth.
B) they cannot travel through molten regions,and thus reflect back toward the surface of Earth.
C) they reflect and scatter off numerous irregularities and faults inside Earth.
D) their speed changes with changing density,causing the waves to refract.
Correct Answer:
Verified
Correct Answer:
Verified
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