S278_12 Glossary
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
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EvapotranspirationThe combined effects of evaporation and transpiration. | |
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HumidityA measure of how close air is to saturation with water vapour. | |
Hydraulic gradientThe slope of a water table. | |
Hydrological cycleAnother name for the water cycle.
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Hydrologically effective precipitationThe quantity of water available from underground or from rivers in an area, given by the excess of precipitation over actual evapotranspiration. | |
HydrologyThe study of water movement on and beneath the ground, and the physics and chemistry of water. | |
HydrosphereThe parts of the Earth that are mainly composed of water. | |
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IrrigationThe managed watering of crops so they can be grown in areas where they could otherwise not be grown, or to improve the yield.
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M |
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Meteoric waterFresh water derived by condensation from the atmosphere and which accumulates as surface water or underground water. | |