| A | B |
|---|
| permeable | materials with large connected pores that allow water to pass through |
| impermeable | materials with few or no pores and do not allow water to pass through |
| saturated zone | area of permeable material that is totally filled with water |
| water table | top of the saturated zone |
| unsaturated zone | area above the water table |
| aquifer | underground layer of rock or sediment that holds water |
| artesian well | a well that is dug into an area where the preasure on the water pushes it up without a pump |
| well | a channel dug into the aquifer that provides a water supply |
| Spring | groundwater that flows to the surface |
| polution | materials that are not ment to be in a substance that cause harm |
