sábado, 25 de octubre de 2014

The water cycle

The water cycle 

     The water does not stay in the same places. We've all seen falling from the clouds when it rains or snows, have seen runs along rivers and streams; We can also see how, over time, the water in an open container evaporates ... Where does the water come from? Where you going? Let's see: 

     From the sea to the clouds. EVAPORATION 

     Due to the heat of the sun, the water of the sea surface evaporates slowly. It also evaporates, though less, water from lakes, reservoirs, rivers, etc. 
This water vapor rises and is forming clouds may store large amounts of water in vapor form. 

     Cloud to ground. CONDENSATION AND PRECIPITATION 

     The wind pushes the clouds that formed over the sea and many of them come ashore. When these clouds are cooled, the water vapor containing condensed and falls as rain. Lowering further the temperature, precipitation may occur as snow or hail. Thus, the water, mainly from the sea, going to the mainland. 

     FROM LAND TO SEA

     Once the water has precipitated on the mainland, you can follow several paths:

Some of it will seep into the soil and accumulate in large underground reservoirs (aquifers) or underground streams that form, over time, the water will stop coming to the surface to take its course. 

Another part of the falling water will pass through the earth's surface in streams, creeks and rivers that lead, again, the water to the sea. So the water cycle or hydrologic cycle is complete.

                             

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