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All About Water

The famous Hydrological Cycle is the easiest and simplest way to describe the earth’s water path as it changes states and moves throughout the land and atmosphere. It is defined as the never ending circulation and movement of Earth’s water from land to sky and back again. (See illustration above for simplicity)

The 6 stages which comprise the Hydrological (water) cycle are: Evaporation/Transpiration, Transport, Condensation, Precipitation, Ground water, and Run-off. They are discussed briefly in the following paragraphs.

1. Evaporation consists of the heat from the sun changing water from sea, rivers, lake, land, etc to form into water vapor rising into the atmosphere and clouds. Transpiration is a similar process in which plants lose their water into the atmosphere.

2. Transport is the hydrological stage that consists of the movement of evaporated (water vapor), like clouds specifically, from over water to over land.

3. Condensation is when water vapor has condensed and ultimately forming into tiny droplets of water into clouds.

4. Precipitation is the act of the condensed water droplets from and clouds and atmosphere falling in the form of rain, snow, or sleet. Water has now returned to the land, sea, or other water source.

5. Ground Water consists of the a portion of the precipitated water which is soaked up by the land. Some of this supply is trapped between rock layers and is stored as ground water. Some other portion of the precipitated water comes across impermeable rock layers causing it to flow laterally in the form of an aquifier. Aquifiers will ultimately return the water to the surface emptying into lakes, rivers, and oceans.

6. The majority of the water fallen from the sky will run downhill as RUN-OFF. This Run-off water will replenish lakes, rivers, and oceans until it eventually evaporates again.




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