In seismic methods, what does travel time refer to?
A. Time to set up equipment
B. Time to process data
C. Time for waves to reach a receiver
D. Time before seismic shaking begins
Answer: Option C
A. Time to set up equipment
B. Time to process data
C. Time for waves to reach a receiver
D. Time before seismic shaking begins
Answer: Option C
Which geophysical method uses electrical resistivity to study subsurface layers?
A. Seismic reflection
B. Electrical resistivity method
C. Gravity method
D. Magnetic method
What is the primary physical property measured in the seismic refraction method?
A. Electrical resistivity
B. Density
C. Seismic wave velocity
D. Magnetic susceptibility
The magnetic method in geophysics is used to detect:
A. Density contrasts
B. Magnetic anomalies
C. Water table depth
D. Pore pressure
Ground Penetrating Radar (GPR) is most effective in detecting:
A. Subsurface water
B. Magnetic minerals
C. Airborne pollutants
D. Earthquakes
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