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Syllabus

Atmosphere and Climate — Syllabus

CBSE · Class 9 · Social Science

What Atmosphere and Climate covers in CBSE Class 9 Social Science: 4 topics, for the 2026-27 session. Part of the CBSE Class 9 Social Science syllabus.

99 questions88 flashcards5 concepts

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4 Topics · CBSE Class 9 Social Science · 2026-27

Topics in Atmosphere and Climate

1

1. Composition of the Atmosphere

  • The atmosphere is a mixture of gases, water vapour, and tiny dust particles.
  • Nitrogen and oxygen are the two primary and most abundant gases essential to life on Earth.
  • Carbon dioxide, argon, helium, neon, krypton, xenon, ozone, and hydrogen are present in smaller amounts.
2

2. Structure of the Atmosphere

  • The atmosphere has five main layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
  • Layers are identified by changes in temperature and density with height.
  • The troposphere has an average height of about 12 kilometres.
3

3. Weather, Climate, and Atmospheric Elements

  • Weather refers to the hour-to-hour and day-to-day condition of the atmosphere.
  • Climate refers to the sum total of weather conditions and variations over a large area for an extended period, usually thirty years or more.
  • Important elements of weather and climate are temperature, precipitation, humidity, wind, and atmospheric pressure.
4

4. Seasons in India

  • The Indian Meteorological Department has recognised four distinct seasons in India.
  • Winter generally lasts from December to early April.
  • Summer or pre-monsoon lasts from April to June, or up to July in north-western India.

Key Concepts

Central concept: Atmosphere and Climate

AtmosphereComposition of the atmosphereStructure of the atmosphereWeatherClimateElements of weather and climateAtmospheric pressureWind

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Frequently Asked Questions

What are the important topics in Atmosphere and Climate for CBSE Class 9 Social Science?
Key topics in Atmosphere and Climate include Composition of the Atmosphere, Structure of the Atmosphere, Weather, Climate, and Atmospheric Elements, Seasons in India. Study these first, then practise questions on each for Class 9 exams.
How should I revise Atmosphere and Climate for Class 9 exams?
Learn the core ideas first, then work through the 99 practice questions on Atmosphere and Climate. 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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All CBSE Class 9 Social Science Syllabus

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