summary of chapter 3 geography class 10
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Answer:
Fresh water:
96.5 per cent of the total volume of world’s water is estimated to exist as oceans and only 2.5 per cent exists as fresh water. 70 per cent of the fresh water occurs as ice sheets and glaciers in Antarctica, Greenland and the mountainous regions of the world. Less than 30 per cent is stored as groundwater in the world’s acquirers. Fresh water is mainly obtained from surface run off and ground water. This is continually being renewed and recharged through the hydrological cycle. All the water moves within the hydrological cycle making water a renewable resource.
Three fresh water sources are:
Precipitation—from rainfall; Surface water—in rivers, lakes, etc.; Ground water—water stored in underground acquirers which gets recharged by rainfall.
Water scarcity:
Water scarcity means shortage of water. It is usually associated with regions having low rainfall or drought prone areas.
There are many other reasons which lead to scarcity of water:
Large growing population; In the agricultural sector, water resources are being over-exploited to expand irrigated areas and dry- season agriculture; More water required for irrigation purposes to facilitate higher food production, i. e., for doing multiple cropping and for HYV seeds; There is greater demand for water with growing urbanization and industrialization; An unequal access to water among different social groups; The quality of water is deteriorating, i.e., getting polluted by domestic and industrial wastes, chemical fertilizers and pesticides used in agriculture; Excessive use of water by industries which also require water to generate hydro-electric power to run them; and Over exploitation
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Water Resources Class 10 Notes Geography Chapter 3
April 3, 2019 by phani
Water Resources Class 10 Notes Social Science Geography Chapter 3 SST Pdf free download is part of Class 10 Social Science Notes for Quick Revision. Here we have given Water Resources Class 10 Geography Chapter 3 Notes.
Formulae Handbook for Class 10 Maths and Science
Board CBSE
Textbook NCERT
Class Class 10
Subject Social Science Notes
Chapter Geography Chapter 3
Chapter Name Water Resources
Category CBSE Revision Notes
Water Resources Class 10 Notes Social Science Geography Chapter 3
Fresh water:
96.5 per cent of the total volume of world’s water is estimated to exist as oceans and only 2.5 per cent exists as fresh water. 70 per cent of the fresh water occurs as ice sheets and glaciers in Antarctica, Greenland and the mountainous regions of the world. Less than 30 per cent is stored as groundwater in the world’s acquirers. Fresh water is mainly obtained from surface run off and ground water. This is continually being renewed and recharged through the hydrological cycle. All the water moves within the hydrological cycle making water a renewable resource.
Three fresh water sources are:
Precipitation—from rainfall; Surface water—in rivers, lakes, etc.; Ground water—water stored in underground acquirers which gets recharged by rainfall.
Water scarcity:
Water scarcity means shortage of water. It is usually associated with regions having low rainfall or drought prone areas.
There are many other reasons which lead to scarcity of water:
Large growing population; In the agricultural sector, water resources are being over-exploited to expand irrigated areas and dry- season agriculture; More water required for irrigation purposes to facilitate higher food production, i. e., for doing multiple cropping and for HYV seeds; There is greater demand for water with growing urbanization and industrialization; An unequal access to water among different social groups; The quality of water is deteriorating, i.e., getting polluted by domestic and industrial wastes, chemical fertilizers and pesticides used in agriculture; Excessive use of water by industries which also require water to generate hydro-electric power to run them; and Over exploitation of water in the urban areas.
Explanation:
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