Class 9 Social Science Chapter 3, Atmosphere and Climate, covers the blanket of air held around the Earth by gravity: what it is made of, its layers, weather and climate, India’s seasons and the monsoon, and climate change, with the Punjab floods of 2025 as a case study.
What Class 9 Social Science Chapter 3 Covers
Composition and Structure of the Atmosphere lists the gases of the atmosphere and its layers, and how each affects the planet.
Weather and Climate separates the two and explains the elements of weather and climate.
Seasons in India and Monsoon explain the mechanism of the monsoon.
Climate Change and the Punjab Floods 2025 end the chapter with causes and effects of the floods and a classroom discussion on reducing our carbon footprint.
Facts about the air: temperature falls with height only in the troposphere and mesosphere; in the thermosphere it rises fast as gases absorb X-rays and ultraviolet rays. We do not feel the air’s weight because it presses from all sides and our bodies push back equally. Winds are named after the direction they blow from, and land and sea breezes keep coastal climates moderate. India traditionally has six seasons of about two months each: spring, summer, monsoon, early autumn, late autumn and winter.
Exercises in Chapter 3
- Questions and activities at the end of the chapter, after a Before we move on… recap.
Read Class 9 Social Science Chapter 3 Online
More Chapters
- Previous: Chapter 2: Shaping of the Earth’s Surface
- Next: Chapter 4: Early Humans and Beginning of Civilisation
- All Social Science chapters and the other Class 9 books: Class 9 NCERT books 2026-27
- All Class 1 to 12 NCERT Textbooks: NCERT Books PDF (Class 1–12)
FAQ
What is the difference between weather and climate?
Weather is the state of the atmosphere at a place over a short time; climate is the average pattern of weather over many years.
Which case study is in Class 9 Social Science Chapter 3?
The Punjab floods of 2025: their causes and effects.
How many seasons does the traditional Indian calendar have?
Six, each about two months long: spring, summer, monsoon, early autumn, late autumn and winter.