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Theme : Food |
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UNIT I : FOOD |
(10) Periods |
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Plant and animal breeding and selection for quality improvement and management ; use of fertilizers, manures; protection from pests and diseases; organic farming. |
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Theme : Materials |
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UNIT 2 : MATTER - NATURE AND BEHAVIOUR |
(50) Periods |
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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. |
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Nature
of matter : Elements, compounds and mixtures. Heterogenous and homogenous
mixtures, colloids and suspensions. |
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Particle
nature, basic units : atoms and molecules. Law of constant
proportions. Atomic and molecular masses. |
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Mole
Concept : Relationship of mole to mass of the particles and numbers.
Valency. Chemical formula of common compounds. |
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Structure of atom : Electrons, protons and neutrons; Isotopes and isobars. |
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Theme : The World of the living |
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UNIT 3 : ORGANIZATION IN THE LIVING WORLD |
(45) Periods |
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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). |
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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). |
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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. |
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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. |
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Theme
: Moving things, people and ideas |
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UNIT 4 : MOTION, FORCE AND WORK |
(60) Periods |
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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. |
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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. |
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Gravitation: Gravitation; universal law of gravitation, force of gravitation
of the earth (gravity), acceleration due to gravity; mass and weight; free
fall. |
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Work,Energy and Power : Work done by a force, energy, power; kinetic and potential
energy; law of conservation of energy. |
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Floatation: Thrust and pressure. Archimedes' principle, buoyancy, elementary
idea of relative density. |
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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. |
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Structure of the human ear (auditory aspect only). |
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Theme
: Natural Resources |
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UNIT 5 : OUR ENVIRONMENT |
(15) Periods |
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Physical resources : Air, Water, Soil. Air for respiration, for combustion, for
moderating temperatures, movements of air and its role in bringing rains across
India. |
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Air, water and soil pollution ( brief introduction). Holes in ozone layer and the probable damages. |
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Bio-geo chemical cycles in nature : water, oxygen, carbon, nitrogen |
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