# Class 9 Science Solutions | SwaVid Browse NCERT science solutions for Class 9, chapter by chapter. Canonical: https://www.swavid.com/science/class/9 Source: https://swavid.com/science/class/9 # Chapters, NCERT solutions, and practice ## Exploration: Entering the World of Secondary Science ## Exploration: Entering the World of Secondary Science ## Cell: The Building Block of Life ## Cell: The Building Block of Life ## Tissues in Action ## Tissues in Action ## Describing Motion Around Us ## Describing Motion Around Us ## Exploring Mixtures and their Separation ## Exploring Mixtures and their Separation ## How Forces Affect Motion ## How Forces Affect Motion ## Work, Energy, and Simple Machines ## Work, Energy, and Simple Machines ## Journey Inside the Atom ## Journey Inside the Atom ## Atomic Foundations of Matter ## Atomic Foundations of Matter ## Sound Waves: Characteristics and Applications ## Sound Waves: Characteristics and Applications ## Reproduction: How Life Continues ## Reproduction: How Life Continues ## Patterns in Life: Diversity and Classification ## Patterns in Life: Diversity and Classification ## Earth as a System: Energy, Matter, and Life ## Earth as a System: Energy, Matter, and Life ## If a chapter feels harder than it should, find the missing idea first. Class 9 Science Pick a chapter for concepts, practice questions, and worked NCERT answers. 13 chapters to explore One route. Three useful ways in. Chapter 1 What is Science? · The Scientific Method: A Framework for Inquiry · Observation vs. Inference +4 Chapter 1 Chapter 2 Discovery of the Cell and Cell Theory · Prokaryotic and Eukaryotic Cells · Plasma Membrane and Cell Wall +5 Chapter 2 Chapter 3 Meristematic Tissues in Plants · Permanent Tissues in Plants · Epithelial Tissues +3 Chapter 3 Chapter 4 Describing Motion and Reference Point · Distance and Displacement · Speed and Velocity +4 Chapter 4 Chapter 5 Pure Substances and Mixtures · Types of Mixtures: Homogeneous and Heterogeneous · Solutions, Suspensions, and Colloids +5 Chapter 5 Chapter 6 Force and Its Effects · Galileo's Observations and Inertia · Newton's First Law of Motion (Law of Inertia) +4 Chapter 6 Chapter 7 Work Done by a Force · Energy: Forms and Transformations · Kinetic Energy +3 Chapter 7 Chapter 8 Discovery of Subatomic Particles · Atomic Models: Thomson, Rutherford, and Bohr · Atomic Number and Mass Number +3 Chapter 8 Chapter 9 Dalton's Atomic Theory · Laws of Chemical Combination · Atoms and Atomic Mass +4 Chapter 9 Chapter 10 Characteristics of Sound Waves · Speed of Sound · Reflection of Sound (Echo and Reverberation) +4 Chapter 10 Chapter 11 The Necessity of Reproduction · Asexual Reproduction: Single Parent, Identical Offspring · Simple Asexual Methods: Fission and Budding +5 Chapter 11 Chapter 12 Need for Classification and Basis of Classification · Hierarchy of Classification · Five Kingdom Classification +3 Chapter 12 Chapter 13 Earth's Major Spheres · Energy Flow: The Sun as the Driving Force · The Water Cycle +4 Chapter 13 A better first move SwaVid's Learning Debt Identifier helps map the prerequisite before practice turns into guessing. ## Key Links - [NCERT Science](https://swavid.com/science) - [Start the first chapter](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Check a prerequisite](https://swavid.com/learning-debt-identifier) - [Start the first chapter](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Check a prerequisite](https://swavid.com/learning-debt-identifier) - [Exploration: Entering the World of Secondary Science](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Concepts](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Practice](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science/ncert-solutions) - [Exploration: Entering the World of Secondary Science](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Practice set Practice](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/exploration-entering-the-world-of-secondary-science) - [Cell: The Building Block of Life](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life) - [Concepts](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life) - [Practice](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life/ncert-solutions) - [Cell: The Building Block of Life](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life) - [Practice set Practice](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/cell-the-building-block-of-life) - [Tissues in Action](https://swavid.com/science/class/9/chapter/tissues-in-action) - [Concepts](https://swavid.com/science/class/9/chapter/tissues-in-action) - [Practice](https://swavid.com/science/class/9/chapter/tissues-in-action/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/tissues-in-action/ncert-solutions) - [Tissues in Action](https://swavid.com/science/class/9/chapter/tissues-in-action) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/tissues-in-action) - [Practice set Practice](https://swavid.com/science/class/9/chapter/tissues-in-action/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/tissues-in-action/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/tissues-in-action) - [Describing Motion Around Us](https://swavid.com/science/class/9/chapter/describing-motion-around-us) - [Concepts](https://swavid.com/science/class/9/chapter/describing-motion-around-us) - [Practice](https://swavid.com/science/class/9/chapter/describing-motion-around-us/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/describing-motion-around-us/ncert-solutions) - [Describing Motion Around Us](https://swavid.com/science/class/9/chapter/describing-motion-around-us) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/describing-motion-around-us) - [Practice set Practice](https://swavid.com/science/class/9/chapter/describing-motion-around-us/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/describing-motion-around-us/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/describing-motion-around-us) - [Exploring Mixtures and their Separation](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation) - [Concepts](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation) - [Practice](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation/ncert-solutions) - [Exploring Mixtures and their Separation](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation) - [Practice set Practice](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/exploring-mixtures-and-their-separation) - [How Forces Affect Motion](https://swavid.com/science/class/9/chapter/how-forces-affect-motion) - [Concepts](https://swavid.com/science/class/9/chapter/how-forces-affect-motion) - [Practice](https://swavid.com/science/class/9/chapter/how-forces-affect-motion/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/how-forces-affect-motion/ncert-solutions) - [How Forces Affect Motion](https://swavid.com/science/class/9/chapter/how-forces-affect-motion) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/how-forces-affect-motion) - [Practice set Practice](https://swavid.com/science/class/9/chapter/how-forces-affect-motion/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/how-forces-affect-motion/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/how-forces-affect-motion) - [Work, Energy, and Simple Machines](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines) - [Concepts](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines) - [Practice](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines/ncert-solutions) - [Work, Energy, and Simple Machines](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines) - [Practice set Practice](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/work-energy-and-simple-machines) - [Journey Inside the Atom](https://swavid.com/science/class/9/chapter/journey-inside-the-atom) - [Concepts](https://swavid.com/science/class/9/chapter/journey-inside-the-atom) - [Practice](https://swavid.com/science/class/9/chapter/journey-inside-the-atom/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/journey-inside-the-atom/ncert-solutions) - [Journey Inside the Atom](https://swavid.com/science/class/9/chapter/journey-inside-the-atom) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/journey-inside-the-atom) - [Practice set Practice](https://swavid.com/science/class/9/chapter/journey-inside-the-atom/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/journey-inside-the-atom/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/journey-inside-the-atom) - [Atomic Foundations of Matter](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter) - [Concepts](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter) - [Practice](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter/ncert-solutions) - [Atomic Foundations of Matter](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter) - [Practice set Practice](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/atomic-foundations-of-matter) - [Sound Waves: Characteristics and Applications](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications) - [Concepts](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications) - [Practice](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications/ncert-solutions) - [Sound Waves: Characteristics and Applications](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications) - [Practice set Practice](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/sound-waves-characteristics-and-applications) - [Reproduction: How Life Continues](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues) - [Concepts](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues) - [Practice](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues/practice-questions) - [Solutions](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues/ncert-solutions) - [Reproduction: How Life Continues](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues) - [Concept cards Concepts](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues) - [Practice set Practice](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues/practice-questions) - [NCERT solutions Solutions](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues/ncert-solutions) - [Begin with the idea](https://swavid.com/science/class/9/chapter/reproduction-how-life-continues) - [Patterns in Life: Diversity and Classification](https://swavid.com/science/class/9/chapter/patterns-in-life-diversity-and-classification) - [Concepts](https://swavid.com/science/class/9/chapter/patterns-in-life-diversity-and-classification) - [Practice](https://swavid.com/science/class/9/chapter/patterns-in-life-diversity-and-classification/practice-questions) - 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