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प्रश्न
Explain water cycle in detail.
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.
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संबंधित प्रश्न
What are the different states in which water is found during the water cycle?
Mention two main functions of water for living organisms.
Name two processes responsible for the formation of clouds.
Which of the following processes add water vapour to the atmosphere?
- Transpiration
- Precipitation
- Condensation
- Evaporation
The ice sheets from the north and south poles and the icecaps on the mountains, get converted into water vapour through the process of ______.
Analogy:
Evaporation: Sea:: ______: Trees.
Analogy:
Filtering: Sand:: ______: Ammonia.
One of the following processes is not a step involved in the water-cycle operating in nature
Explain the three stages of the water cycle.
How are clouds and fogs formed?
