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Which geophysical method uses sound waves to map subsurface layers

This question belongs to Geological Engineering Site Investigation And Geotechnical Exploration
Site Investigation and Geotechnical Exploration
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Which geophysical method uses sound waves to map subsurface layers?

Answer & Solution
Correct Answer: Option C
Seismic refraction uses sound waves that travel through different subsurface layers, helping to identify rock or water table levels.
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