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9th Standard CBSE Science Chapters / Lessons


Matter in Our Surroundings

Is Matter Around Us Pure

Atoms and Molecules

Structure of the Atom

The Fundamental Unit of Life

Tissues

Diversity in Living Organisms

Motion

Force and Laws of Motion

Gravitation

Work and Energy

Sound

Why Do We Fall Ill

Nature Resources

Improvement in Food Resources

9th Standard CBSE Science Chapters / Lessons Syllabus

Matter-Nature and Behaviour

Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.

Nature of matter : Elements, compounds and mixtures. Heterogeneous and homogenous mixtures, colloids and suspensions.

Particle nature, basic units : Atoms and molecules, Law of constant proportions, Atomic and molecular masses. Mole concept : Relationship of mole to mass of the particles and numbers.

Structure of atoms : Electrons, protons and neutrons, valency, chemical formula of common compounds. Isotopes and Isobars.

Organization in the Living World

Call - Basic Unit of life : Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes - basic structure, number.

Tissues, Organs, Organ System, Organism : Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).

Biological Diversity : Diversity of plants and animals - basic issues in scientific naming, basis of classification. Hierarchy of categories / groups, Major groups 64 of plants (salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms). Major groups of animals (salient features) (Nonchordates upto phyla and chordates upto classes).

Health and Diseases : Health and its failure. Infectious and Non-infectious diseases, their causes and manifestation. Diseases caused by microbes (Virus, Bacteria and Protozoans) and their prevention; Principles of treatment and prevention. Pulse Polio programmes.

Motion, Force and Work

Motion : Distance and displacement, velocity; uniform and non-uniform motion along a staight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion.

Force and Newton’s laws : Force and Motion, Newton’s Laws of Motion, Action and reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum.

Gravitation : Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall.

Floatation : Thrust and Pressure. Archimedes’ Principle; Buoyancy; Elementary Idea of Relative Density. Work, energy and power : Work done by a Force, Energy, Power; Kinetic and Potential energy; Law of conservation of energy.

Sound : Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR. Structure of the Human Ear (Auditory aspect only).

Our Environment

Physical resources : Air, Water, Soil. Air for respiration, for combustion, for moderating temperatures; movements of air and its role in bringing rains across India. Air, Water and Soil pollution (brief introduction). Holes in ozone layer and the probable damages.

Bio-geo chemical cycles in nature : Water, Oxygen, Carbon and Nitrogen.

Food Production

Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

Matter in Our Surroundings

Physical Nature of Matter-Characteristics of Particles of Matter-States of Matter-Can Matter Change its State?-Evaporation

Is Matter Around Us Pure?

What is a Mixture?-What is a Solution?-Separating the Components of a Mixture-Physical and Chemical Changes-What are the Types of Pure Substances?

Atoms and Molecules

Laws of Chemical Combination-What is an Atom?-What is a Molecule?-Writing Chemical Formulae-Molecular Mass and Mole Concept

Structure of the Atom

Charged Particles in Matter-The Structure of an Atom-How are Electrons Distributed in Different Orbits (Shells)?-Valency-Atomic Number and Mass Number-Isotopes

The Fundamental Unit of Life

What are Living Organisms Made Up of?-What is a Cell Made Up of? What is the Structural Organisation of a Cell?

Tissues

Are Plants and Animals Made of Same Types of Tissues?-Plant Tissues-Animal Tissues

Diversity in Living Organisms

What is the Basis of Classification?-Classification and Evolution-The Hierarchy of Classification-Groups-Plantae-Animalia-Nomenclature

Motion

Describing Motion-Measuring the Rate of Motion-Rate of Change of Velocity-Graphical Representation of Motion-Equations of Motion by Graphical Method-Uniform Circular Motion

Force and Laws of Motion

Balanced and Unbalanced Forces-First Law of Motion-Inertia and Mass-Second Law of Motion-Third Law of Motion-Conservation of Momentum

Gravitation

Gravitation-Free Fall-Mass-Weight-Thrust and Pressure-Archimedes’ Principle-Relative Density

Work and Energy

Work-Energy-Rate of Doing Work

Sound

Production of Sound-Propagation of Sound-Reflection of Sound-Range of Hearing-Applications of Ultrasound-Structure of Human Ear

Why do we Fall Ill?


Health and its Failure-Disease and Its Causes-Infectious Diseases

Natural Resources

The Breath of Life: Air-Water: A Wonder Liquid-Mineral Riches in the Soil-Biogeochemical Cycles-Ozone Layer

Improvement in Food Resources

Improvement in Crop Yields-Animal Husbandry

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