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7th gr Water
| Term | Definition |
|---|---|
| hydrologic cycle | water cycle; "hydro-"=water; continuous circulation of water between the Earth and the atmosphere |
| precipitation | rain, snow, sleet, or hail that falls to the ground |
| surface water | any water, in liquid form, that is on the Earth's surface; rivers, lakes, and oceans |
| groundwater | precipitation that soaks into the earth |
| aquifer | a body of rock and/or sediment that holds groundwater |
| Edwards Aquifer | aquifer that San Antonio gets its water from |
| watershed/drainage basins | an area of land where water drains downhill to the lowest point |
| Great Divide/Continental Divide | mountain range that divides the United States into east and west; east of the divide water flows toward Mississippi river and Gulf of Mexico and west of the divide it flows toward the Pacific |
| artificial reefs | a manmade structure that may mimic some of the characteristics of a natural reef; old oil rigs are often turned into reefs |
| Clean Water Act | federal law in the United States protects against water pollution |
| recharge zones | the place where water is able to seep into the ground and refill an aquifer; Edwards Aquifer has many recharge zones |
| pollution | the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects |
| point source pollution | any single identifiable source of pollution |
| non-point source pollution | pollution that does not come from a single source |
| groundwater depletion | long-term water-level declines caused by sustained groundwater pumping; this is can be avoided by regulating use |
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