If P and S waves were to travel at the same constant speeds, what could be inferred about the Earth's

interior?
a. The interior is density stratified.
b. The interior is liquid.
c. The interior is homogenous.
d. The interior is solid


ANS: C
If the interior of Earth was homogenous, they waves would travel through it at the same speed and in a
straight line. Information can be found in the section The Study of Earthquakes Provides Evidence of
Layering.

Environmental & Atmospheric Sciences

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