GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Drill below the water table.
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Drill below the aquifer.
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Drill near a dry well.
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Drill below impermeable rock.
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Detailed explanation-1: -Groundwater can also be extracted through a well drilled into the aquifer. A well is a pipe in the ground that fills with groundwater. This water can be brought to the surface by a pump.
Detailed explanation-2: -Water in aquifers may be brought to the surface naturally through a spring, or can be discharged into lakes and streams. However, most groundwater is brought to the surface by pumping it through a well (which draws the water like soda through a straw) that is drilled into the aquifer.
Detailed explanation-3: -Dams are reservoirs used to store water and hence, groundwater cannot be drawn out using dams. However, tubewells, borewells and handpumps are used to draw out groundwater.
Detailed explanation-4: -When a water-bearing rock readily transmits water to wells and springs, it is called an aquifer. Wells can be drilled into the aquifers and water can be pumped out with handpump or tubewell.
Detailed explanation-5: -Unconfined aquifers are sometimes also called water table or phreatic aquifers, because their upper boundary is the water table or phreatic surface.