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What does the term water table represent in hydrology?

Answer and explanation

Correct answer: The upper surface of the groundwater-saturated zone

Correct answer: B. The water table is the upper boundary of the zone of saturation beneath the ground. Below this boundary, the openings in soil and rock are substantially filled with groundwater; at the water table, groundwater pressure is approximately equal to atmospheric pressure. Rainwater can infiltrate downward and recharge this zone, while pumping or prolonged drought can lower the water table. A is wrong because a river-bed depth is a surface-water measurement. C concerns clouds and the atmosphere, not underground water. D refers to sea level, which is a different reference surface. The water table is not necessarily flat: it commonly follows the broad shape of the land and can rise or fall locally. Memory cue: imagine an underground “top line” of fully water-filled ground.

Related tags

Water TableGroundwaterInfiltrationHydrological CycleThe Living WorldBiologyClass 11 Mcq

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