ISS 310 Lecture Notes - Lecture 6: Evapotranspiration, Greywater, Porosity
20 Mar 2017
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Document Summary
Solid (we refer to it as ice) Liquid (we refer to it as water) Gas (we refer to it as water vapor) Hydrologic cycle and the pathways of water movement (p. 4) The hydrologic cycle is a model of the pathways for water movement in the environment. Water not only exists in three states (phases), but it also moves from one state to another in a cyclical manner. Explanations of hydrologic cycle link on p. 4. Water sources and their distribution on earth (all water and freshwater) (p. 4) Humidity; relative humidity and its relationship to air temperature (p. 5) The water vapor content of the air is known as humidity. Warm air can hold more water vapor than cold air. Therefore, warm air in the low latitudes (namely the tropics and subtropics) has the potential to hold more moisture than that of cold air in the high latitudes (subarctic and polar regions).
