A piezometer is an instrument placed in groundwater used to measure pressure (head). What is the correct parameter it measures?

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Multiple Choice

A piezometer is an instrument placed in groundwater used to measure pressure (head). What is the correct parameter it measures?

Explanation:
A piezometer directly measures the pressure exerted by groundwater, expressed as a height of water—the pressure head—at that point. The water rises in the tube to a level that represents the local pore-water pressure (in meters of water). This reading reflects the pressure component of hydraulic head (the total head is elevation head plus pressure head), not temperature, flow rate, or salinity. Temperature requires a thermometer, flow rate needs a flow meter, and salinity requires a conductivity or salinity sensor.

A piezometer directly measures the pressure exerted by groundwater, expressed as a height of water—the pressure head—at that point. The water rises in the tube to a level that represents the local pore-water pressure (in meters of water). This reading reflects the pressure component of hydraulic head (the total head is elevation head plus pressure head), not temperature, flow rate, or salinity. Temperature requires a thermometer, flow rate needs a flow meter, and salinity requires a conductivity or salinity sensor.

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