the journey of a waterdrop作文.docx

the journey of a waterdrop作文The "heaven and earth" this skill, it seems that only the mythical story "Journey to the West" in the Monkey King will have. Can water also do it? Yes, it can really do it.The real starting point of the journey of a small drop of water is from evaporation, the sun with a small drop of water floating into the atmosphere, to the first stop of the journey of a small drop of water - to achieve the real Hup to heaven". This is the most important part of the water cycle. The water vapor produced by evaporation enters the atmosphere and moves with atmospheric activity. The most important part of the water vapor in the atmosphere comes from the oceans, and part of it also comes from evaporation from the surfaces of the continents. Today our small water droplets, from the arms of the mother of the ocean, when the sun warmly dresses these liquid sprites into gaseous cherubs to the atmosphere, with the wind uncle led from the sea over the play to the land over the process, in the water cycle is called water vapor transport, but it is one of the most active links in the water cycle.The second stop of the journey of small drops of water is achieved through precipitation. After playing in the sky, the small drops of water change back to their original sprite outfits, and with the greetings from the sky to the earth, they float to the third stop of the journey of small drops of water - the ground, with a feeling of solidity. The way this journey is done is through runoff. Runoff is the difference between the amount of precipitation and evaporation in a region (watershed). The multi-year average oceanic water balance equation is: evaporation = precipitation - runoff; the multi-year average land water balance equation is: precipitation = runoff + evaporation. However, the geographic distribution of precipitation and evaporation is not uniform for either oceans or land, and this difference is most evident at different latitudes. The fourth stop of the droplet journey, let's also feel the small drop of water "into the ground". In fact, we are talking about infiltration and underground runoff, which refers to the process of water infiltration through the ground into the soil. The physical process of water in the soil under the action of molecular forces, capillary gravity and gravity, is an important part of the formation of runoff.Experienced the "heaven and earth" of the small drops of water is really a bit homesick, in the happy river in the big river, or in different underground river walk, and finally returned to their home sea. Many, many small drops of water, in their happy journey, so that the water is full of spirituality, so that the world of water is alive and well.We call the travel process of small drops of water the water cycle.