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Revision Notes
Climate Change — Revision Notes
ICSE · Class 11 · Geography
Climate Change revision notes for ICSE Class 11 Geography: 4 topics in quick points. Part of the ICSE Class 11 Geography syllabus.
65 questions38 flashcards5 concepts
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Key Topics to Revise
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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.
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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 NotesKey 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?
Key topics in Climate Change include Meaning and Evidence of Climate Change, Natural Causes of Climate Change, Human Causes of Climate Change and Greenhouse Effect, Carbon Dioxide, Temperature Trend, and International Action. Study these first, then practise questions on each for Class 11 exams.
How should I revise Climate Change for Class 11 exams?
Learn the core ideas first, then work through the 65 practice questions on Climate Change. Revise 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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