Term
| What is another name for the water cycle? |
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Definition
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Term
The water cycle is considered to be...
open system, closed system, variable system? |
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Definition
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Term
| Why is the water cycle considered to be a closed system? |
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Definition
| This is because the amount of water in it remains constant even though the water moves throughout the system. |
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Term
| What is the process of evaporation? |
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Definition
| water going from sources such as the surface of a pond or river into the air |
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Term
| What is the process of precipitation? |
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Definition
| water falling to the earth such as by rain or hail |
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Term
| What is the process of transpiration? |
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Definition
| water being drawn off the leaves of plants up into the air |
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Term
| What is the process of condensation? |
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Definition
| water going from vapor form into droplet form |
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Term
| What is the process when water forms clouds? |
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Definition
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Term
| What is the process when it snows? |
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Definition
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Term
| What is the process when a puddle dries up? |
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Definition
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Term
| What is the process when moisture rises up off of the plants in a forest? |
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Definition
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Term
| What are examples of surface water? |
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Definition
| ponds, rivers, lakes, oceans |
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Term
| What is water that is found on the top of land areas? |
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Definition
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Term
| What is water that is found in porous rock below the land? |
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Definition
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Term
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Definition
| this means there are openings or holes for water or other substances to fill in |
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Term
| What has happened to the amount of water used in the U.S. since the 1980s? |
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Definition
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Term
| What is the majority of water used for in the U.S.? |
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Definition
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Term
| What is water conservation? |
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Definition
| this is when we are careful to use smaller amounts of water |
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Term
| What are examples of water conservation? |
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Definition
| using a low-flow shower head, taking shorter showers, watering the grass only once a week, etc. |
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Term
| Two of the lowest categories for water use in the U.S. include ... |
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Definition
| public supply and rural livestock use |
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Term
| Where is the dependent variable shown on a graph? |
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Definition
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Term
| Where is the independent variable shown on a graph? |
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Definition
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Term
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Definition
| the level under the earth's surface where underground water is first encountered |
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Term
| What is organic pollution? |
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Definition
| pollution from living or once living things |
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Term
| What is inorganic pollution? |
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Definition
| pollution from pesticides or other substances |
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Term
| What is an example of organic pollution? |
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Definition
| livestock manure, sewage run-off, microorganisms |
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Term
| What is meant by pathogenic? |
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Definition
| something that can cause disease |
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Term
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Definition
| waste that comes from toilets, etc. in peoples' homes |
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Term
| What percentage of domestic sewage is treated by municipal sewage systems in the U.S.? |
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Definition
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Term
| Why is domestic sewage dangerous in our water supply? |
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Definition
| It contains pathogenic organisms. |
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Term
| Why is pollution from fertilizers dangerous in our water supply? |
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Definition
| the soluble nitrogen causes too much algae to grow in our water sources |
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Term
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Definition
| small, plant-like organisms that float and live in water sources |
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Term
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Definition
| a sudden temperature increase that can kill organisms |
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Term
| What happens to the amount of oxygen that is dissolved in water as it is warmed up? |
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Definition
| less oxygen can be dissolved - so less oxygen for organisms living in that water |
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Term
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Definition
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Term
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Definition
| very tiny living things such as bacteria |
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Term
| What type of water treatment did we model in class? |
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Definition
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Term
| What are the main steps to a typical municipal filtration process? |
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Definition
1. Disinfection - Chlorine is added to the water for disinfection.
2. Coagulation and flocculation
Alum is added in proportion to the river turbidity to form floc particles created from the suspended materials in the water.
3. Sedimentation - The water travels through Sedimentation Basins where the heavier material settles. Coagulation and flocculation remove turbidity as well as metals, including arsenic.
4. Filtration - Following sedimentation, the water travels through an extensive filtration process that removes sediment and other suspended materials.
5. Corrosion control - At the end of the treatment process, pH is adjusted to reduce corrosion in plumbing systems. |
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