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CBSE Class 9 - Science

NCERT Syllabus For CBSE Class 9 Science

One Paper Time : 2 1/2Hours; Marks : 60
I Food 05
II Matter - ITS nature and behaviour 15
III Organisation in living world 13
IV Motion, Force and Work 20
V Our Environment 07
  TOTAL 60
  Theme : Food  

1. Food (Periods - 10)

  Plant and animal breeding and selection for quality improvement and management ; use of fertilizers, manures; protection from pests and diseases; organic farming.

  Theme : Materials  

2. Matter - Nature And Behaviour (Periods - 50)

  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.  

(i) Nature of matter

: Elements, compounds and mixtures. Heterogenous and homogenous mixtures, colloids and suspensions.

(ii) Particle nature

, basic units : atoms and molecules. Law of constant proportions. Atomic and molecular masses.

(iii) Mole Concept

: Relationship of mole to mass of the particles and numbers. Valency. Chemical formula of common compounds.

(iv) Structure of atom

: Electrons, protons and neutrons; Isotopes and isobars.
  Theme : The World of the living


3. Organization In The Living World (Periods - 45)


(i) BiologicalDiversity :

Diversity of plants and animals - basic issues in scientific naming, basis of classification. Hierarchy of categories / groups, Major groups of plants (salient features) (Bacteria, Thalophyta, Bryo phyta, Pteridophyta, gymnosperms and Angiosperms). Major groups of animals (salient features) (Non-chordates upto phyla and chordates upto classes).

(ii) 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; chloroplast, mitochondria, vacuoles, ER, golgi apparatus; nucleus, chromosomes - basic structure, number. Tissues, organs, organ systems, organism. Structure and functions of animal and plant tissues (four types in animals; merismatic and permanent tissues in plants).

(iii) Health and diseases :

Health and its failure. Disease and its causes. Diseases caused by microbes and their prevention - Typhoid, diarrhoea, malaria, hepatitis, rabies, AIDS, TB, polio; pulse polio programme.

(iv) Transport of materials in the living systems :

Diffusion / exchange of substances between cells and their environment and between the cells themselves in the living system; role in nutrition, water and food transport, excretion, gaseous exchange.
  Theme : Moving things, people and ideas


4. Motion, Force And Work (Periods - 60)


(i) Motion:

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

(ii) Force and Newton's laws :

Force and motion, Newton's laws of motion, inertia of a body, inertia and mass, momentum, force and acceleration. Elementary idea of conservation of momentum, action and reaction forces.

(iii) Gravitation:

Gravitation; universal law of gravitation, force of gravitation of the earth (gravity), acceleration due to gravity; mass and weight; free fall.

(iv) Work,Energy and Power

Work done by a force, energy, power; kinetic and potential energy; law of conservation of energy.

(v) Floatation:

Thrust and pressure. Archimedes' principle, buoyancy, elementary idea of relative density.

(vi) 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).  
  Theme : Natural Resources


5. Our Environment (Periods - 15)


(i) 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.  

(ii) Bio-geo chemical cycles in nature :

water, oxygen, carbon, nitrogen
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