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प्रश्न
Explain water cycle in detail.
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उत्तर
It represents the exchange of water between air, land and sea and between the living organisms and the environment.
Two overlapping water cycles are operating in nature:
(i) Global water cycle-
Water evaporates from the hydrosphere (oceans, lakes, rivers seas, ponds) by the heat of the sun and forms clouds. Clouds are carried over to the land by winds. After getting cooled, water in the clouds falls on the earth in the form of rain, sleet and hail. This water again evaporates in the atmosphere and completes the global water cycle.
(ii) Biological water cycle-
Here, the living organisms, i.e., plants and animals, consume water from the global water cycle and return it back. Plants release water in the form of water vapours by the process of transpiration. Animals return water to the air as vapours by the process of respiration and to the soil in the form of fluid by the process of excretion.
संबंधित प्रश्न
List out some other benefits of rain water harvesting.
Water becoming water vapour on heating is called evaporation.
What are the different stages of water cycle?
Water evaporates into air from oceans, rivers, and lakes but not from the soil.
The process of water changing into its vapour, is called evaporation.
Each day, we lose a little more than a cup of water when we ______.
The water vapour gets cooled and changes into tiny water droplets that form ______ in the sky.
There is mass mortality of fishes in a pond. What may be the reasons?
Place the following statements in a proper order to form a meaningful paragraph.
- Which in turn decreases the seepage of rain water into the ground.
- This decreases the open areas like parks and playgrounds.
- Increasing population create demand for construction of houses, shops, offices, roads and pavements.
- This results in depletion of water table and creates scarcity of more water.
What are the three stages in the water cycle?
