CBSE – Central Board of Secondary Education has presented syllabus of CBSE class 9 for the academic year 2018 – 2019. CBSE Syllabus For Class 9 Science is helpful for Schools following NCERT publications. To understand all the topics with best visuals, LearnFatafat offers you CBSE Class 9 Science Course.
CBSE Syllabus For Class 9 Science
- Unit I:Matter-Nature and Behaviour (23 Marks)
- 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.
- Unit II: Organization in the Living World (20 Marks)
- Cell – 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 of plants(salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and
Angiosperms). Major groups of animals (salient features) (Non-chordates 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
- Unit III: Motion, Force and Work (27 Marks)
- Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight 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).
- Unit IV: Our Environment (06 Marks)
- 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
- Bio-geo chemical cycles in nature: Water, Oxygen, Carbon and Nitrogen.
- Unit V: Food Production (04 Marks)
Plant and animal breeding and selection for quality improvement and management;
Use of fertilizers and manures; Protection from pests and diseases; Organic farming.
Source and Credits: cbse.nic.in