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| An underground bed or layer of earth, gravel, or porous stone that yields water. |
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artesian formation [image] |
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| An artesian formation is formed when a permeable layer dips underground between impermeable layers. Its usually made of shale or clay. |
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evapotranspiration [image] |
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| the process of transferring moisture from the earth to the atmosphere by evaporation of water and transpiration from plants. |
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A natural hot spring that intermittently ejects a column of water and steam into the air. |
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| the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. |
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| Chemistry, Geology. (of porous substances, rocks, etc.) not permitting the passage of a fluid through the pores, interstices, etc. |
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| Also called magnetic permeability. Electricity. a measure of the change in magnetic induction produced when a magnetic material replaces air, expressed as a coefficient or a set of coefficients that multiply the components of magnetic intensity to give the components of magnetic induction |
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| Geology, Engineering. the ratio, expressed as a percentage, of the volume of the pores or interstices of a substance, as a rock or rock stratum, to the total volume of the mass. |
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| to make a new charge, esp. to attack again. |
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| agricultural produce or a quantity of food grown by a nation or area in excess of its needs, esp. such a quantity of food purchased and stored by a governmental program of guaranteeing farmers a specific price for certain crops. |
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| In a water budget, periods of water usage, deficit, recharge and surplus are controlled by the storage of groundwater |
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Water covers 70% of the earth's surface, but it is difficult to comprehend the total amount of water when we only see a small portion of it. The oceans contain 97.5% of the earth's water, land 2.4%, and the atmosphere holds less than .001%, |
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water cycle
n. The cycle of evaporation and condensation that controls the distribution of the earth's water as it evaporates from bodies of water, condenses, precipitates, and returns to those bodies of water. Also called hydrologic cycle. |
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| the planar, underground surface beneath which earth materials, as soil or rock, are saturated with water. |
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