Water from the water cycle is different from the Earth through absorption of solar energy has been changing the model to Earth in some other places,such as:ground water by solar evaporation of a water vapor in the air.The presence of water on Earth models including solid,liquid and gaseous.While the majority of water in the Earth exists in the atmosphere,ground,underground,lakes,rivers and oceans.Some water through physical action,such as:evaporation,precipitation,infiltration,surface flows and flows under the table,from one place to another mobile.If water flows from the river to ocean.
The main role of the water cycle in three respects:1 Water is the medium of all nutrients,nutrient cycling and water shabby inextricably linked; ② water right is a very good solvent substances in the ecosystem,an energy transfer and use of the role; ③ water is the result of geological changes one of the elements of a local mineral loss,and another deposition of mineral elements often through the water cycle to complete.
The water circulation and circulation
The water cycle is divided into circulation and circulation.By evaporation from the ocean,water vapor,was taken to the air over land,condensation for rain,snow,hail,fell on the ground,was part of evaporation to the atmosphere,as the rest of the surface runoff or groundwater runoff,the ultimate reunification Ocean.Such between marine and terrestrial water reciprocating movement,known as the water cycle.Only in a local area (land or sea) of the water cycle as water circulation.The environment in the water cycle is the big dog intertwined,and at the global level and in all areas on the planet constantly conducting.
The formation of the water cycle and impact factors
Formation of the water cycle internal water under normal conditions gaseous,liquid,solid easily into the characteristics of external radiation and the solar gravity,the water cycle to provide water for the physical changes and movement of energy.Earth's water is widely distributed,huge reserves,is the material basis of the water cycle.As on Earth uneven intensity of solar radiation,different regions of the water cycle is also not the same.In equatorial regions such as solar radiation intensity,precipitation than normal in latitudes,especially more than the high latitude regions.
Many factors affect the water cycle.Natural factors main meteorological conditions (atmospheric circulation,wind direction,wind speed,temperature,humidity,etc.) and geographic conditions (topography,geology,soil,vegetation,etc.).Human factors on the water cycle has a direct or indirect impact.