| A | B |
|---|
| permeable | soils that have pores or openings that allow liquids or gases to pass through |
| impermeable | soils that do NOT have pores that allow water to pass through easily |
| percolation | the process in which water trickles through material that is porous |
| percolation rate | the rate at which water passes through the surface |
| pores | tiny openings in and between particles of rock and soil which may contain air or water |
| porous | full of pores capable of absorbing liquids |
| saturated | full of water |
| saturated zone | a layer of permeable rock in which pores are totally filled with water |
| unsaturated | not full of water |
| unsaturated zone | the layer of rocks and soil above the water table that is not saturated with water |
| surface runoff | rain, snow melt, or other water that flows across the surface of the ground to streams, rivers, or lakes |
| groundwater | water that flows underground; it may eventually come to the surface in a stream, lake, spring, or wetland |
| polarity | the property of water that makes water molecules stick together |
