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Revision Notes

Natural Hazards and Disasters

Jammu & Kashmir Board · Class 11 · Geography

Quick revision notes for Natural Hazards and Disasters — Jammu & Kashmir Board Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

78 questions64 flashcards5 concepts

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Key Topics to Revise

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1. Core Ideas: Hazard, Disaster, and Risk

  • A natural hazard is a natural condition or element that can cause harm, such as steep slopes, ocean currents, or extreme desert climate.
  • A disaster is an undesirable occurrence that causes or threatens serious disruption of life and property and usually strikes suddenly.
  • Hazards and disasters are related but not the same. A hazard has potential for harm; a disaster is the actual harmful event.
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2. Disaster Reduction and Management Framework

  • The issue of global repercussions of natural disasters was raised at the UN General Assembly in 1989 and formalised at Yokohama in May 1994.
  • The World Conference on Natural Disaster Reduction was held in Yokohama from May 23rd to 27th, 1994.
  • The conference declared 1990-2000 as the International Decade for Natural Disaster Reduction.
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3. Earthquakes in India

  • Earthquakes are among the most unpredictable and destructive natural disasters.
  • Tectonic earthquakes are the most devastating because they affect a large area.
  • The Indian plate moves at 1 cm per year towards the north and northeast and is obstructed by the Eurasian plate.
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4. Tsunamis

  • Tsunamis are caused by earthquakes or volcanic eruptions that suddenly move the sea floor and displace ocean water.
  • Tsunami waves are also called harbour waves or seismic sea waves.
  • In deep ocean water, tsunami impact is low because wave-height is limited.

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Full Notes

Key Concepts

A disaster is an undesirable occurrenceA natural hazard is a featureThe global concern over disastersThe Indian plate moves northA tsunami is a series

Frequently Asked Questions

What are the important topics in Natural Hazards and Disasters for Jammu & Kashmir Board Class 11 Geography?
Natural Hazards and Disasters covers several key topics that are frequently asked in Jammu & Kashmir Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Natural Hazards and Disasters — Jammu & Kashmir Board Class 11 Geography?
Understand the core concepts first, then work through the 78 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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