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Chapter 6.3
Water Beneath the Surface
| Term | Definition |
|---|---|
| Porosity | the volume of open spaces in rock or soil |
| Permeability | a measure of a material's ability to transmit fluids |
| Aquifer | rock or soil through which groundwater moves easily |
| Zone of Saturation | zone where all open spaces in sediment and rock are completely filled with water |
| Groundwater | water underground in the zone of saturation |
| Water table | the upper level of the saturated zone of groundwater |
| Spring | a flow of groundwater that emerges naturally at the ground surface |
| Geyser | a hot spring or fountain that ejects water at various intervals |
| Well | an opening bored into the zone of saturation |
| Artesian well | a well in which the water naturally rises above the level of the water table |
| Cavern | a naturally formed underground chamber or series of chambers most commonly produced by solution activity in limestone |
| Travertine | a form of limestone that is deposited by hot springs or as a cave deposit |
| Karst topography | an area that has a land surface or topography with numerous depressions called sinkholes |
| Sinkhole | a depression produced in a region where soluble rock has been removed by groundwater |