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CBSE Class 9 Science — Revision Notes

CBSE Class 9 Science revision notes, chapter by chapter across 13 chapters. Follows the CBSE syllabus. Starts with Exploration : Entering the World, Cell.

How to Revise Effectively

  • Active recall: cover the notes, try to recall the key points, then check.
  • Spaced repetition: revise each chapter again after a day, then after a few days, then after a week or two.
  • Write, don't just read: writing key points and formulas out by hand helps them stick.
  • Teach someone: explaining an idea to a friend is a good test of whether you understand it.

Chapter-Wise Revision Notes — 13 Chapters

1

Exploration : Entering the World of Secondary Science

4 topics
  • 1. Scientific Thinking and Models
  • 2. Science Language: Symbols, Units, and Mathematics
  • 3. Speed of Light and Scientific Symbols
  • 4. Laws, Theories, and Principles
Models are simplified ways of representingMeghnad Saha studied light from starsScientific quantities such as massThe speed of light is denotedA law describes a regular pattern
Read the Exploration : Entering the World of Secondary Science notes
2

Cell :The Building Block of Life

4 topics
  • 1. Discovery and Study of Cells
  • 2. Cell Membrane, Osmosis, and Cell Wall
  • 3. Prokaryotic and Eukaryotic Cells
  • 4. Cell Interior and Cell Organelles
Robert Hooke observed cork cellsThe human eye cannot clearly separateThe cell membrane is a thinDiffusion is the net movementPlant
Read the Cell :The Building Block of Life notes
3

Tissues in Action

4 topics
  • 1. Basic idea of tissues and organisation
  • 2. Meristematic tissue and plant growth
  • 3. Permanent tissues in plants
  • 4. Conducting tissues and tissue systems in plants
A tissue is a groupMeristematic tissue contains actively dividing cellsApical meristem is found atLateral meristem forms a ring alongIntercalary meristem is located at
Read the Tissues in Action notes

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Revision notes with diagrams and examples for all 13 chapters in Super Tutor.

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Frequently Asked Questions

Where can I find CBSE Class 9 Science Revision Notes?

This page has revision notes for 13 chapters of CBSE Class 9 Science for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Browse Revision Notes by Chapter

13 chapters

1

Exploration : Entering the World of Secondary Science

2

Cell :The Building Block of Life

3

Tissues in Action

4

Describing Motion Around Us

5

Exploring Mixtures and their Separation

6

How Forces Affect Motion

7

Work, Energy, and Simple Machines

8

Journey Inside the Atom

9

Atomic Foundations of Matter

10

Sound Waves Characteristics and Applications

11

Reproduction : How Life Continues

12

Patterns in Life : Diversity and Classification

13

Earth as a System : Energy, Matter, and Life

More Science Resources

CBSE Class 9

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Formula Sheet

The formulas of each chapter in one place

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

NCERT Solutions

Every textbook exercise solved step by step

Other CBSE Class 9 Subjects

MathematicsSocial ScienceEnglishHindiSanskrit