Term
| How much of the world’s fresh water is frozen solid in the polar icecaps? |
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Definition
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Term
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Definition
| fresh water that is aboveground in lakes, ponds, rivers, and streams |
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Term
| Surface water is depended on to supply _______________ with their water supplies. |
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Definition
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Term
| Why is it better to depend on a lake instead of a river for a water supply? |
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Definition
| rivers only have the water that is in them from that year’s precipitation which varies from year to year. A lake contains a reservoir of water from multiple years. |
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Term
| What % of the world’s population relies on water that originates in another country? |
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Definition
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Term
| What are the three positive uses of a dam? |
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Definition
| Water supply that has a reserve that is usable, flood control, and electricity. |
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Term
| What is the recharge zone? |
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Definition
| The recharge zone is the land from which the groundwater originates. |
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Term
| What is the problem with the aquifers? |
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Definition
| The problem with aquifers is that people are pumping out water faster than it can be replaced naturally. |
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Term
| What are the two main methods of desalinization? |
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Definition
| The two main methods of desalinization are distillation and reverse osmosis. |
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Term
| Describe the process of distillation. |
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Definition
| In distillation, heat is used to evaporate fresh water from salt water, leaving the salts behind. In revere osmosis, pressure is used to push the water through a semipermeable membrane that will not permit the salts to pass. |
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Term
| Why don’t we use desalinization more to supply us with fresh water? |
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Definition
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Term
| In very poor countries, what is usually the cause of water pollution? |
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Definition
| In very poor countries, it is not industry, but the fact that the population has outgrown the water supply. |
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Term
| What are the seven kinds of water pollutants? |
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Definition
| The seven kinds of water pollutants are: pathogens, organic matter, organic chemicals, inorganic chemicals, toxic chemicals, physical agents, and radioactive waste. |
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Term
| The EPA (Environmental Protection Agency) determined that 96% of the polluted bodies of water in the United States were contaminated by what? |
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Definition
| 96% of the polluted bodies of water in the United States are contaminated by nonpoint sources. |
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Term
| What is nonpoint pollution? is pollution that comes from |
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Definition
| Nonpoint pollution is pollution that comes from many sources rather than from a single specific site. |
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Term
| What are the by products of a water treatment plant? |
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Definition
| The by product of a water treatment plant is sludge and treated water. |
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Term
| The three diseases mentioned in our book that people can catch by drinking water that is polluted with pathogens are? |
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Definition
| The three diseases mentioned in our book that people can catch by drinking water that is polluted with pathogens are cholera, hepatitis, and typhoid. |
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Term
| Why has the era of building dams come to an end in the United States? |
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Definition
| most of the best locations already have dams |
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Term
| Why is sludge hard to dispose of? |
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Definition
| Sludge contains dangerous concentrations of toxic chemicals, and the amount needed to be disposed of is enormous. |
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Term
| A water treatment plant could also be called a sewage plant? |
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Definition
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Term
| How do pathogens enter the water supplies? |
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Definition
| in untreated waste water or animal feces |
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Term
| What is the most common method of testing to see if pathogens are in the water? |
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Definition
| Check for Escherichia coli, a common type of human intestinal bacteria. |
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Term
| What specifically happens to fish in oxygen depleted water? |
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Definition
| they suffocate – they die will not be accepted. |
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Term
| What part of ocean pollution comes from activities on land even oil pollution? |
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Definition
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Term
| Oil pollution comes from what three major sources? |
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Definition
| small oil tankers that have accidents or leaks, spillage when tankers are loaded or unloaded, and offshore oil rigs leaking petroleum. These “small” accidents accumulate and have a large impact. |
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Term
| Which aquifer supplies water to the city of San Antonio and surrounding towns? |
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Definition
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Term
| What happens to fish when artificial eutrophication occurs in a lake? |
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Definition
| They die from suffocation |
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Term
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Definition
| Pressure is used to push the water through a semipermeable membrane that will not permit the salts to pass. |
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