EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a stream that flows into a lake or into a larger stream
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the upper surface of underground water; the upper boundary of the zone of saturation
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all the bodies of fresh water, salt water, ice, and snow that are found above the ground
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a body of rock or sediment that stores groundwater and allows the flow of groundwater
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Detailed explanation-1: -An aquifer is a body of porous rock or sediment saturated with groundwater. Groundwater enters an aquifer as precipitation seeps through the soil. It can move through the aquifer and resurface through springs and wells.
Detailed explanation-2: -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. Precipitation eventually adds water (recharge) into the porous rock of the aquifer.
Detailed explanation-3: -Permeability refers to how easily water passes through sediments and rock. Permeability is a function of the size of pore openings. If sediments are well sorted, pore spaces are uniformly sized, thereby allowing for groundwater flow readily between individual sediment particles.
Detailed explanation-4: -Figure 2 is a simple cartoon showing three different types of aquifers: confined, unconfined, and perched. Recharge zones are typically at higher altitudes but can occur wherever water enters an aquifer, such as from rain, snowmelt, river and reservoir leakage, or from irrigation.
Detailed explanation-5: -If the open spaces in the rock layer are connected, water can move through the rock. A rock’s ability to let water pass through is called permeability. Rock that water cannot flow through is called impermeable.