Class 10 Social Science - HARYANA
Geography: Water Resources
This chapter explores the crucial role of water as a resource on Earth, covering its scarcity, conservation, and management. Students learn about freshwater availability, the causes of water scarcity due to overexploitation and pollution, and the need for sustainable management. It highlights traditional rainwater harvesting systems as well as multi-purpose river projects like dams, discussing their pros and cons. For BSEH Class 10 board exams, this chapter is high-scoring and frequently features questions on water conservation techniques, causes of scarcity, and the environmental impacts of large dams.
Start Learning FreeKey Concepts
Water Scarcity
A shortage of water resources relative to demand, caused by overpopulation, intensive agriculture, industrialization, and unequal access to clean water.
Multi-Purpose River Projects
Large dams built across rivers for irrigation, electricity generation, flood control, and fish breeding, often referred to by Nehru as the 'temples of modern India'.
Rainwater Harvesting
A sustainable technique of collecting and storing rainwater from rooftops or surface run-off for future use, widely practiced in arid regions like Rajasthan.
Hydrological Cycle
The continuous circulation of water within the Earth's hydrosphere, ensuring that water is a renewable resource, though its regional availability varies greatly.
Palar Pani
In arid regions of Rajasthan, rainwater stored in underground tanks (tankas) is traditionally referred to as 'palar pani' and is considered the purest form of natural water.
Important Formulas
Board Exam Info
In the Haryana Board (BSEH) Class 10 Social Science exam, this chapter typically carries around 3 to 5 marks. Questions usually include 1-mark objective questions, short-answer questions on rainwater harvesting or causes of water scarcity, and map-skilling questions to locate major dams like Bhakra Nangal, Hirakud, or Sardar Sarovar.
Frequently Asked Questions
Why are multi-purpose river projects criticized?
Dams cause large-scale displacement of local communities, submergence of forests, destruction of aquatic life, and trigger earthquakes or soil erosion.
What is the importance of rooftop rainwater harvesting?
It helps in conserving water during dry seasons, recharges groundwater levels, and provides a clean source of drinking water, especially in water-scarce areas.
How does water become a renewable resource?
Water is continuously renewed and recharged through the hydrological cycle involving evaporation, condensation, and precipitation, though quality and local distribution remain issues.
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