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The upper limit of the underground saturated zone, where all spaces between rocks are completely filled with water, is called what?

Answer and explanation

Correct answer: Water table

The correct answer is B, the water table. Underground materials commonly have an unsaturated zone above and a saturated zone below. In the saturated zone, the connected pore spaces are filled with water. The upper surface of this zone is called the water table or groundwater table. Its depth can vary with rainfall, pumping, recharge, and local geology. A, an aquifer base, would mean the lower boundary of a water-bearing geological unit, not its upper water-filled limit. C, infiltration line, is not the standard term for this boundary; infiltration is the movement of surface water into soil. D, runoff crest, is not a standard groundwater term and suggests surface flow rather than underground saturation. Memory cue: the water table is the “top” of the underground water-filled zone, not a table made of water.

Related tags

Water TableGroundwaterSaturated ZoneHydrological CycleThe Living WorldBiologyClass 11 Mcq

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