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ch 10
vocab
| Term | Definition |
|---|---|
| Infiltration | is the process by which precipitation that has fallen on land trickle into the ground and ground and becomes groundwater. |
| zone of saturation | region below Earths surface where all pores of a material are completely filled with groundwater. |
| water table | upper boundary of the zone of saturation that rises during wet seasons and drops during dry period |
| zone of aeration | region above the water table where materials are moist but pores contain mostly |
| permeability | ability of a material to let water pass through is high in material with large well connected pores and low in material with rew pores or small pores. |
| aquifers | permeable underground layer through which groundwater flows relatively easily |
| aquicludes | impermeable layer that is a barrier to groundwater such as silt clay and shate |
| springs | natural discharge of groundwater at Earths surface where an aquifer and an aquiclude come in contact |
| hot prings | thermal spring with temperatures higher than that of the human |
| geyers | explosive hot spring that erupts regularly |
| cave | a natural underground opening connected to Earths surface usually formed when groundwater dissolves limestone |
| sinkhole | depression the Earths surface formed when a cave callapses ro bedrock is dissolved by acidic rain or moist soil |
| karst topography | irregular topography with sinkholes sinks and sinking streams caused by groundwater dissolution of limestone. |
| stalactite | con-shaped of cylindrical dripstone deposit of calcium carbonate that hangs like an icicle from a caves ceiling. |
| stalagmites | cones-shaped of cylindrical drip stone deposit of calcium carbonate that hangs like and icicle from a caves ceiling. |
| drawdown | difference between the water level in a pumped well and the original water-table level. |
| recharge | process by which water from precipitation and runoff is added to the zone of saturation. |
| artesian well | fountain of water that spurts above the land surface when a well taps a deep confined aquifer containing water under pressure. |