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Sookdeo ES Ch.14
Water Resources
| Question | Answer |
|---|---|
| fresh water | water relatively pure with few dissolved salts |
| surface water | water found on the Earth's top layer including rainfall, melting snow, glaciers and ice caps |
| runoff | water that flows over land and has not been absorbed into the ground |
| river system | water moving downhill according to gravity forming a network of connected streams and rivers |
| watershield | all of land areas that supply water to a particular river system |
| groundwater | water found below the Earth's surface |
| permeable | layers of of soil and rock containing space or pores through which water can pass |
| impermeable | layers of of soil and rock with few or no pores through which water can pass |
| aquifer | sponge like formations of rock, sand and gravel that holds water |
| water table | boundary between the zone of aeration, aquifer, and the zone of saturation, lower level |
| recharge zone | any area where surface water soaks into the ground and reaches an aquifer |
| well | a hole dug into an aquifer reaching the zone of saturation to access groundwater |
| water diversion | moving water from its source to places where humans use it such as homes and farms |
| dam | obstruction placed in a river or stream to block its flow |
| reservoir | large lakes that store water water for human use |
| salinization | build up of salts in the surface layer of soil |
| desalinization | make more freshwater by removing salt from seawater |
| xeriscaping | strategy to use less water for landscaping by watering at night to prevent loss of water by evaporation |
| point- source pollution | water pollution from a location such as a factory or sewer pipe |
| nonpoint-source pollution | pollution from many places that spread over a large area |
| cultural eutrophication | excess of nitrogen and phosphorous in fresh water caused by humans |
| wastewater | water used by humans in some way |
| algal bloom | explosion of algae in an area |
| pathogens | disease causing organisms and viruses in the air, soil and water |
| red tide | over growth of red algae releases toxins killing animals in or near the ocean |
| septic system | waste water disposal through an underground septic tank |
Created by:
dsookdeo
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