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| Total volume of empty space in a material. Sand and Mud have high porosity. Granite, Igneous, and Metamorphic rock have low porosotu. |
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| Measure of the ease with which fluid flow through a porous material. Sandstone has high permeability, mudstone low. |
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| Sediment or rocks that transmit water easily. |
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| An impermeable body of rock or stratum of sediment that acts as a barrier to the flow of groundwater. |
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| Boundary above which pore spaces contain mostly air and below which they contain only water. |
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| The pore space that contains air. |
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| Pore space that contains only water. |
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| Water table comes above the ground. |
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| Water table is below ground. When it rains, water table comes above ground and stream forms, when it stops raining, stream dries and water table lowers back below ground. |
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| Top surface of groundwater that has been trapped above the regional water table. |
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| Natural outlet from which groundwater flows. |
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| Penetrates confined aquifers, in which water is under enough pressure to cause the water to rise on its own to a level above the surface of the aquifer. |
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| A wet area, where plants can grow, in an otherwise bone-dry region. |
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| If users pump water out of a well too fast, then the water table sinks down around the well, a process called drawdown, so that the water table becomes a downward-pointing, cone shaped surface. |
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| Motion of the earth’s surface as it shifts downward as water table levels decrease. |
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| Kras plateau in which surface features reflect the dissolution of bedrock below. |
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| Water with high mineral content. |
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| Downward process by which water on the ground surface enters the soil. |
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| Process by which water runs off slopes instead of seeping into the ground. |
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