Term
| What percentage Earth’s water is fresh water? |
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Definition
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Term
| Which of the following contrasts between confined and unconfined aquifers is correct? |
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Definition
| Only confined aquifers can produce artesian wells. |
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Term
| Which of the following statements about surface waters is not correct? |
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Definition
| Levees are used to make reservoirs. |
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Term
| Which of the following statements about dams is not correct? |
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Definition
| Most dams are built to generate electricity. |
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Term
| Which of the following statements about aqueducts is correct? |
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Definition
| Aqueducts designed as open canals can lose a lot of water via evaporation. |
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Term
| Which of the following lists of agricultural irrigation techniques is in the correct order, from least efficient to most efficient? |
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Definition
Furrow irrigation
Flood irrigation
Spray irrigation
Drip irrigation |
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Term
| Which of the following statements about the industrial use of water is not correct? |
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Definition
| Its use is becoming less efficient. |
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Term
| Which of the following statements about nonpoint source (NPS)pollution is not correct? |
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Definition
| NPS is water pollution that originates from a distinct source such as a pipe or tank. |
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Term
| Human wastewater results in which of the following water-pollution problems? |
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Definition
The organic matter decomposes and reduces dissolved oxygen levels.
Decomposition of organic matter releases great quantities of nutrients.
Pathogenic organisms are carried into surface waters. |
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Term
| Under which of the following circumstances is a sewage treatment plant legally permitted to bypass normal treatment protocol and discharge large amounts of sewage directly into a lake or river? |
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Definition
| When combined volumes of storm water and wastewater exceed the capacity of an older plant |
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Term
| Which of the following inorganic substances is naturally occurring in rocks, soluble in groundwater, and toxic at low concentrations? |
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Definition
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Term
| Acid mine drainage results from acidic water formed below ground that makes its way to the surface; the acidic water is formed as a result of the flooding of abandoned mines, where the underground water? |
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Definition
| Reacts with a type of rock, pyrite, which releases iron and hydrogen ions. |
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Term
| All of the following are problems that result from the use of pesticides except? |
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Definition
| Pesticide run-off enters surface waters and increases the solubility of heavy metals. |
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