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Atmosphere and Climate

CBSE · Class 9 · Social Science

Complete topic list for Atmosphere and Climate in CBSE Class 9 Social Science. Key concepts, sub-topics, and what to focus on for board exams.

99 questions88 flashcards5 concepts

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4 Topics · CBSE Class 9 Social Science

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

Frequently Asked Questions

What are the important topics in Atmosphere and Climate for CBSE Class 9 Social Science?
Atmosphere and Climate covers several key topics that are frequently asked in CBSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Atmosphere and Climate — CBSE Class 9 Social Science?
Understand the core concepts first, then work through the 99 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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All 9 chapters — CBSE Class 9 Social Science Syllabus

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