EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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flooding is more likely when it is high
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wells may run dry when it is low
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water tables are always at the same height
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lakes are formed where the water table meets the surface
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Detailed explanation-1: -The water table is not always at the same level; it can rise and fall depending on the amount of water in the soil.
Detailed explanation-2: -the water table is generally flat is the false statement.. Water table is defined as the level of ground below which the area is saturated with water. Water table is not flat but the shape depends on the topology of surface of ground, weather, geology and use of land.
Detailed explanation-3: -The water table is an underground boundary between the soil surface and the area where groundwater saturates spaces between sediments and cracks in rock. Water pressure and atmospheric pressure are equal at this boundary.
Detailed explanation-4: -The water table fluctuates both with the seasons and from year to year because it is affected by climatic variations and by the amount of precipitation used by vegetation. It also is affected by withdrawing excessive amounts of water from wells or by recharging them artificially.
Detailed explanation-5: -Answer and Explanation: Of the following, the statement about groundwater that is not true is underground aquifers holding about 99% of all liquid fresh water. About 30% of freshwater is stored in aquifers.