EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a well bored into the zone of saturation
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accessing the water table by use of low-grade explosives
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building a water tower
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damming up a river
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Detailed explanation-1: -Pump and treat is the most common cleanup method for groundwater.
Detailed explanation-2: -The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone. The top of the saturated zone is called the water table (Diagram 1). The water table may be just below or hundreds of feet below the land surface.
Detailed explanation-3: -What process adds water to the zone of saturation? Subsidence, salt water incursion, and drawdown are all possible results of over pumping water from an aquifer.
Detailed explanation-4: -A well is a pipe in the ground that fills with groundwater. This water can be brought to the surface by a pump. Shallow wells may go dry if the water table falls below the bottom of the well. Some wells, called artesian wells, do not need a pump because of natural pressures that force the water up and out of the well.