What does a Bouguer anomaly represent in gravity surveys?
A. Change in water content
B. Difference between observed and theoretical gravity
C. Fault zone
D. Fracture density
Answer: Option B
Solution (By Examveda Team)
A Bouguer anomaly is the corrected gravity reading that helps identify subsurface density variations like cavities, faults, or denser rock bodies.This Question Belongs to Geological Engineering >> Geophysical Methods In Engineering
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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