Chapter 15 Vocabulary First half
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Created by:
Basketballpro6 on January 27, 2011
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9 terms
Terms | Definitions |
|---|---|
Surface runoff | Water that flows over land until it reaches lakes, rivers, or other areas such as oceans. |
Reliable runoff | The amount of surface runoff that we can generally count on as a source of freshwater from year to year. |
Watershed | A ridge of land that separates two adjacent river systems. |
Groundwater | Water that fills the cracks and spaces in underground soil and rock layers. |
Zone of saturation | The lower zone where water accumilates between small rock particles. |
Zone of aeration | The upper zone which usually isn't completely filled with water, but with rocks and soil too. |
Water table | Underground surface below which the ground is wholly saturated with water or the upper layer of the saturated zone. |
Aquifers | Subterranean, porous, water-holding rocks that provide millions of wells with steady flows of water. |
Recharge | New water that enters the aquifer from the surface. |
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