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Water Resources

Himachal Pradesh Board · Class 10 · Social Science

Quick revision notes for Water Resources — Himachal Pradesh Board Class 10 Social Science. Key concepts, formulas, and definitions for last-minute revision.

56 questions20 flashcards5 concepts

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A pie chart illustrating the distribution of water on Earth, showing the percentage of total water that is saltwater, freshwater, and then further breaking down freshwater into glaciers/ice caps, grou
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Key Topics to Revise

1

Water Availability and the Hydrological Cycle

  • Three-fourths of Earth's surface is covered with water, but only a small proportion accounts for usable freshwater
  • Freshwater is obtained from surface runoff and groundwater, continuously renewed through the hydrological cycle
  • The hydrological cycle includes evaporation, condensation, precipitation, and collection processes
2

Water Scarcity - Causes and Types

  • Water scarcity occurs due to over-exploitation, excessive use, and unequal access among social groups
  • Availability varies over space and time due to seasonal and annual precipitation variations
  • Large populations require more water for domestic use and food production
3

Multi-Purpose River Projects and Dams

  • Dams are barriers across flowing water that create reservoirs for multiple uses
  • Multi-purpose projects integrate irrigation, electricity generation, water supply, flood control, recreation, and navigation
  • Examples include Bhakra-Nangal project (Sutlej-Beas basin) and Hirakud project (Mahanadi basin)
4

Problems with Large Dams and Multi-Purpose Projects

  • Dams affect natural river flow, causing poor sediment flow and excessive reservoir sedimentation
  • River fragmentation makes it difficult for aquatic fauna to migrate and spawn
  • Submergence of vegetation and soil leads to decomposition and environmental degradation

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Full Notes

Key Concepts

Water scarcity occurs not just dueThe continuous movement of water throughLarge dams built across riversThe practice of collecting and storingWater scarcity can also result from

Frequently Asked Questions

What are the important topics in Water Resources for Himachal Pradesh Board Class 10 Social Science?
Key topics in Water Resources include Water Resources — Complete Chapter Overview, Water Resources - Chapter Overview, Water Resources — Chapter Overview. These are the concepts Himachal Pradesh Board Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Water Resources — Himachal Pradesh Board Class 10 Social Science?
Understand the core concepts first, then work through the 56 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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