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Revision Notes

Climate Change

ICSE · Class 11 · Geography

Quick revision notes for Climate Change — ICSE Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

65 questions38 flashcards5 concepts

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Key Topics to Revise

1

1. Meaning and Evidence of Climate Change

  • Climate is dynamic and has changed since the birth of the earth.
  • Climate change means a shift in the climate prevailing over a given area.
  • Evidence of past climate change comes from geological records, glacial and inter-glacial deposits, sediments in glacial lakes, tree rings, and historical records.
2

2. Natural Causes of Climate Change

  • Climate changes due to natural as well as human-made causes.
  • Variation in solar irradiation is a natural cause of climate change.
  • The average temperature at the sun's surface is about 6000°C.
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3. Human Causes of Climate Change and Greenhouse Effect

  • Human-induced changes are more pronounced in recent times.
  • Agriculture, fire, domestication of animals, and later industrialisation changed the environment.
  • Agriculture revolution about 8,000-10,000 years ago led to deforestation.
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4. Carbon Dioxide, Temperature Trend, and International Action

  • The carbon dioxide content of the atmosphere has increased sharply in modern times.
  • Carbon dioxide content was about 290 ppm in 1880-1890.
  • It rose to about 315 ppm in 1980, 340 ppm in 1990, 400 ppm in 2000, and 418 ppm in 2018.

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Full Notes

Key Concepts

Climate change is the shiftPast climate changes are shown byThe Younger Dryas was a coldThe Climatic Optimum was a warmThe Little Climate Optimum lasted from

Frequently Asked Questions

What are the important topics in Climate Change for ICSE Class 11 Geography?
Climate Change covers several key topics that are frequently asked in ICSE 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 Climate Change — ICSE Class 11 Geography?
Understand the core concepts first, then work through the 65 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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