Paragraph on Water

2588 WordsMay 29, 201311 Pages
Paragraph on Water Water is a precondition of life. Besides various uses of water, it is mainly used in irrigation as India is an agricultural country. Water is a renewable resource. Life is impossible without water. Its uses are limitless whether it is in home or in fields or in industries. We get water mainly from rain, rivers, wells, ponds and lakes. Sea-water is almost useless for domestic or industrial purposes. India is said to be a Monsoon country. But the distribution of Monsoon rainfall is uneven both regionally and seasonally. Moreover, it is not dependable as its occurrence is not at stipulated times. River is the main source of surface water. The mean annual flow of the Indian rivers is estimated to be about 1,869 billion cubic…show more content…
Evaporation in the atmosphere is a crucial step in the water cycle. Water on Earth's surface will evaporate into the atmosphere as energy is absorbed by liquid water. Water molecules that exist in the liquid phase are free-flowing and in no particular fixed position. Once energy is added to water by heat from the sun, the bonds between the water molecules gain kinetic energy, or energy in motion. Once the gas, called water vapor or humidity, reaches the atmosphere, various types of clouds can form. Evaporation and sublimation Whenever a water molecule leaves a surface and diffuses into a surrounding gas, it is said to have evaporated. Each individual water molecule which transitions between a more associated (liquid) and a less associated (vapor/gas) state does so through the absorption or release of kinetic energy. The aggregate measurement of this kinetic energy transfer is defined as thermal energy and occurs only when there is differential in the temperature of the water molecules. Liquid water that becomes water vapor takes a parcel of heat with it, in a process called evaporative cooling.[5] The amount of water vapor in the air determines how fast each molecule will return to the surface. When a net evaporation occurs, the body of water will undergo a net cooling directly related to the loss of water. Condensation Water vapor will only condense
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