EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because as it moves through the ground it becomes colder and colder water can dissolve more substances
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Because as it moves through the ground, water has more time to dissolve substances in the ground
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Both of the previous
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None of the above
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Detailed explanation-1: -Groundwater usually acquires more dissolved minerals than does surface runoff because of its longer direct contact with soil and rock. It may also absorb gases such as hydrogen sulfide and methane.
Detailed explanation-2: -While groundwater typically contains fewer contaminants than your average surface water, it does tend to have higher mineral content due to the dissolving action of water.
Detailed explanation-3: -Because groundwater typically contains fewer contaminants than surface water, it’s less expensive and easier to treat. While surface waters are commonly found in streams and lakes, groundwater can be accessed in wells wherever the water is needed, which makes it easier to get to.
Detailed explanation-4: -If we compare an organic pollutant in groundwater to one in surface water water, groundwater has fewer microbes to digest organic pollutants, less oxygen no sunlight and surface from which organic pollutant can evaporate. Especially in slow moving groundwater, pollutants can persist indefinitely.
Detailed explanation-5: -High concentrations of dissolved solids are more likely to be a problem in groundwater than in surface water. That’s because when groundwater moves through the rocks and sediments that make up an aquifer, some of the minerals in those rocks and sediment dissolve, a process called “weathering”.