CBSE Class 9th Science Syllabus 2019-20

The subject of Science plays an important role in developing well-defined abilities in cognitive, affective and psychomotor domains in children. It augments the spirit of enquiry, creativity, objectivity and aesthetic sensibility.

Upper primary stage demands that a number of opportunities should be provided to the students to engage them with the processes of Science like observing, recording observations, drawing, tabulation, plotting graphs, etc., whereas the secondary stage also expects abstraction and quantitative reasoning to occupy a more central place in the teaching and learning of Science. Thus, the idea of atoms and molecules being the building blocks of matter makes its appearance, as does Newton’s law of gravitation.

The present syllabus has been designed around seven broad themes viz. Food; Materials; The World of The Living; How Things Work; Moving Things, People and Ideas; Natural Phenomenon and Natural Resources. Special care has been taken to avoid temptation of adding too many concepts than can be comfortably learnt in the given time frame. No attempt has been made to be comprehensive.

At this stage, while science is still a common subject, the disciplines of Physics, Chemistry and Biology begin to emerge. The students should be exposed to experiences based on hands on activities as well as modes of reasoning that are typical of the subject.

General Instructions:

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1.There will be an Annual examination based on entire syllabus.

2.The annual examination will be of 80 marks and 20 marks shall be for Internal Assessment.

3.The components of Internal Assessment would be:

a. Periodic Assessment of 10 marks that would include:

•For 5 marks- Three periodic tests conducted by the school. Average of the best two tests to be taken. This will have a weightage of 05 marks towards the final result.

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•For 5 marks- Diverse methods of assessment as per the need of the class dynamics and curriculum transaction. These may include- short tests, oral test, quiz, concept map, etc. This will also have a weightage of 05 marks towards the final result.

b.Practical / Laboratory work should be done throughout the year and the student should maintain record of the same. Practical Assessment should be continuous. There will be weightage of 5 marks towards the final result. All practicals listed in the syllabus must be completed.

c.Portfolio to be prepared by the student- This would include classwork, other sample of student work, self-assessment and peer-assessment. This will carry a weightage of 5 marks towards the final results.

COURSE STRUCTURE   
 CLASS IX   
 (Annual Examination) Marks: 80
      
Unit No.Unit MarksPeriods 
      
IMatter – Its Nature and Behaviour 2350 
      
IIOrganization in the Living World 2045 
      
IIIMotion, Force and Work 2760 
      
IVOur Environment 0615 
      
VFood; Food Production 0410 
      
 Total 80  
      
 Internal assessment 20  
      
 Grand Total 100  
      
Theme: Materials(50 Periods)
Unit I: 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.

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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.

Theme: The World of the Living(45 Periods)
Unit II: Organization in the Living World 

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.

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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 programmes.

Theme: Moving Things, People and Ideas(60 Periods)
Unit III: Motion, Force and Work 

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.

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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).

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Theme: Natural Resources: Balance in nature(15 Periods)
Unit IV: 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.

Theme: Food(10 Periods)
Unit V: 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.

PRACTICALS

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(30 Periods)

Practicals should be conducted alongside the concepts taught in theory classes.

(LIST OF EXPERIMENTS)

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1.Preparation of:

a)a true solution of common salt, sugar and alum

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b)a suspension of soil, chalk powder and fine sand in water

c)a colloidal solution of starch in water and egg albumin/milk in water and distinguish between these on the basis of

∙transparency

∙filtration criterion

∙stability

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2.Preparation of

a)A mixture

b)A compound

using iron filings and sulphur powder and distinguishing between these on the basis of:

(i)appearance, i.e., homogeneity and heterogeneity

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(ii)behaviour towards a magnet

(iii)behaviour towards carbon disulphide as a solvent

(iv)effect of heat

3.Separation of the components of a mixture of sand, common salt and ammonium

chloride (or camphor).

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4.Perform the following reactions and classify them as physical or chemical changes:

a)Iron with copper sulphate solution in water

b)Burning of magnesium ribbon in air

c)Zinc with dilute sulphuric acid

d)Heating of copper sulphate crystals

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e)Sodium sulphate with barium chloride in the form of their solutions in water

5.Preparation of stained temporary mounts of (a) onion peel, (b) human cheek cells & to record observations and draw their labeled diagrams.

6.Identification of Parenchyma, collenchyma and Sclerenchyma tissues in plants, striped, smooth and cardiac muscle fibers and nerve cells in animals, from prepared slides. Draw their labeled diagrams.

7.Determination of the melting point of ice and the boiling point of water.

8.Verification of the Laws of reflection of sound.

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9.Determination of the density of solid (denser than water) by using a spring balance and a measuring cylinder.

10.Establishing the relation between the loss in weight of a solid when fully immersed in

a)Tap water

b)Strongly salty water with the weight of water displaced by it by taking at least two different solids.

11.Determination of the speed of a pulse propagated through a stretched string/slinky(helical spring).

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12.Study of the characteristics of Spirogyra, Agaricus, Moss, Fern, Pinus (either with male or female cone) and an Angiospermic plant. Draw and give two identifying features of the groups they belong to.

13.Observe the given pictures/charts/models of earthworm, cockroach, bony fish and bird. For each organism, draw their picture and record:

a)one specific feature of its phylum.

b)one adaptive feature with reference to its habitat.

14.Verification of the law of conservation of mass in a chemical reaction.

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15.Study of the external features of root, stem, leaf and flower of monocot and dicot plants.

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