Syllabus of CBSE Class 9 Science for the academic year 2020-2021

Class 9 Science Syllabus 

Unit I: Matter – Its Nature and Behaviour

Nature of Matter –

• Colloids and suspensions

• Homogenous and heterogeneous mixtures

• Elements, compounds and mixtures

Particle Nature and Basic Units –

• Law of Constant Proportions

• Molecules and atoms

• Mole concept

• Molecular and atomic masse

Structure of Atoms –

• Valency

• Protons, electrons and neutrons

• Isotopes and Isobars

• Chemical formula and common compounds

Unit II: Organisation in the Living World

Tissues, Organs, Organ System, Organism –

• Structure and functions of plant and animal tissues

• Four types of tissues in plants

• Meristematic and Permanent tissues in plants

Biological Diversity –

• Basis of classification

• Diversity of plants and animals

• Major group of animals (Non-chordates up to phyla and chordates up to classes)

• Major groups of plants (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms)

Health and Diseases –

• Pulse Polio programmes

• Diseases caused by microbes and their prevention

• Infectious and Non-Infectious diseases

• Treatment and prevention

Unit III: Motion, Force and Work

Motion –

• Acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion

• Uniform and non-uniform motion along a straight line

• Elementary idea of uniform circular motion

• Derivation of equations of motion by graphical method

• Distance, displacement and velocity

Force and Newton’s Laws –

• Force and Motion

• Action and Reaction forces

• Inertia of a body

• Newton’s Laws of Motion

• Inertia and mass

• Momentum

• Elementary idea of conservation of Momentum

• Force and Acceleration  

Gravitation –

• Acceleration due to Gravity

• Universal Law of Gravitation

• Gravity

• Free fall

• Mass and Weight 

Floatation –

• Thrust and Pressure, Archimedes’ Principle

• Elementary idea of Relative Density

• Buoyancy

Work, Energy and Power –

• Work done by a force, energy, power

• Law of Conservation of Energy

• Kinetic and Potential energy

Sound –

• Nature of sound and its propagation in various media, speed of sound, range of hearing in humans

• Reflection of sound

• Ultrasound

• Echo and Sonar 

Unit IV: Our Environment

Physical Resources –

• Air, water and soil

• Pollution of air, water and soil 

Bio-Geo Chemical Cycles in Nature –

• Water 

• Oxygen 

• Carbon 

• Nitrogen

Unit V: Food and Food Production

• Plant and animal breeding and selection for quality improvement and management

• Organic farming

• Use of fertilisers and manures

• Protection from pests and diseases