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How is the velocity of underground water measured?


A) with a hydrometer
B) by injecting and tracking a tracer chemical at different points
C) by interpretation of seismic readouts
D) by tracking the progress of a radioactive tracer through the ground

E) B) and C)
F) None of the above

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What is a typical range of pore sizes in rock?


A) 5 micrometers to 100 micrometers
B) 0.1 millimeter to 0.8 millimeter
C) 0.1 millimeter to 3 centimeters
D) 10 millimeters to 5 centimeters

E) B) and D)
F) None of the above

Correct Answer

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Which land feature is not a hint that ground water weathering has been taking place?


A) amphitheatre-like caverns in cliffs
B) fine sand particles
C) underground caverns
D) rock towers

E) B) and C)
F) A) and B)

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The elevation of the water table will rise when


A) recharge equals discharge.
B) recharge is less than discharge.
C) recharge is greater than discharge.

D) A) and B)
E) None of the above

Correct Answer

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What has caused changes to the water level in the High Plains aquifer?


A) erosion
B) irrigation
C) increasing urban demand
D) tectonic plate movement

E) A) and B)
F) None of the above

Correct Answer

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