Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 6
Textbook Solutions6049
Concept Notes157
Syllabus

Science SSLC (English Medium) Class 6 Tamil Nadu Board of Secondary Education Syllabus 2023-24

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Tamil Nadu Board of Secondary Education Class 6 Science Syllabus - Free PDF Download

Tamil Nadu Board of Secondary Education Syllabus 2023-24 Class 6: The Tamil Nadu Board of Secondary Education Class 6 Science Syllabus for the examination year 2023-24 has been released by the , Tamil Nadu Board of Secondary Education. The board will hold the final examination at the end of the year following the annual assessment scheme, which has led to the release of the syllabus. The 2023-24 Tamil Nadu Board of Secondary Education Class 6 Science Board Exam will entirely be based on the most recent syllabus. Therefore, students must thoroughly understand the new Tamil Nadu Board of Secondary Education syllabus to prepare for their annual exam properly.

The detailed Tamil Nadu Board of Secondary Education Class 6 Science Syllabus for 2023-24 is below.

Academic year:

Tamil Nadu Board of Secondary Education Class 6 Science Revised Syllabus

Tamil Nadu Board of Secondary Education Class 6 Science and their Unit wise marks distribution

Tamil Nadu Board of Secondary Education Class 6 Science Course Structure 2023-24 With Marking Scheme

#Unit/TopicWeightage
I  Term - 1 
1.1  Measurements 
1.2  Force and Motion 
1.3  Matter Around Us 
1.4  The World of Plants 
1.5  The World of Animals 
1.6  Health and Hygiene 
1.7  Computer - An Introduction 
II  Term - 2 
2.1  Heat 
2.2  Electricity 
2.3  Changes Around Us 
2.4  Air 
2.5  The Cell 
2.6  Human Organ Systems 
2.7  Parts of Computer 
III  Term - 3 
3.1  Magnetism 
3.2  Water 
3.3  Chemistry in Everyday Life 
3.4  Our Environment 
3.5  Plants in Daily Life 
3.6  Hardware and Software 
 Total -
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Syllabus

Tamil Nadu Board of Secondary Education Class 6 Science Syllabus for Chapter 1: Term - 1

1.1 Measurements
  • Measurements  
    • Measurement
    • The need for measurement in daily life
  • Measurement of Length  
    • Length
    • Units of length
    • SI Unit of length
    • Subunit of metre
    • Multiple units of metre
    • Measurements of large distance:
      (i) Parallax Method: Parallax or parallactic angle (θ)
    • Method of measuring very small distances (Size of molecules)
    • Range of Lengths
  • International System of Units (SI System)  
    • SI System of unit
    • Why do we need SI Units?
    • Multiples and Sub-multiples of SI Units
  • Unit Prefixes  
  • Devices for Measuring Length  
    • Use of a metre ruler to measure length
    1. Description of a metre ruler
    2. Measurement of length of an object with a metre ruler
    3. Parallax Error
    • Use of measuring tape to measure length
    1. Description of a measuring tape
  • Measuring the Length of a Curved Line  
  • Measurement of Mass  
    • Rage of Mass
  • Devices for Measuring Mass  
  • Measurement of Time  
    • Time
    • SI unit of Time
    • Smaller unit of Time
    • Bigger unit of Time
  • Numerical Problem of Measurement  
1.2 Force and Motion
  • Motion and Rest  
    • What is rest?
    • What is motion?
    • Rest and motion are relative
  • Force  
  • Force - Push or Pull  
  • Types of Force: Contact Force  
    • Types of Contact Force
    1. Frictional Force
    2. Normal reaction Force
    3. Spring Force
    4. Applied Force (Muscular force)
    5. Tension Force
    6. Air Resistance Force
    7. Mechanical force
    8. Force exerted during collision
  • Types of Force: Non-Contact Force  
    • The general character of non-contact force
    • Types of Force: Non-Contact Force
    1. Magnetic Force
    2. Electrostatic Force
    3. Gravitational Force
    4. Nuclear Force
    5. Balance Force
    6. Unbalance Force
  • Effect of Force  
    • A Force can change the State of motion
    • Force can change the shape of an object
    • Stops or tries to stop a moving body
    • Changes or tries to change the direction of motion of a moving body
    • Like parallel forces effect
    • Unbalanced forces effect
    • Unlike parallel forces effect
  • Types of Motion  
  • Multiple Motion  
  • Speed  
    • Speed
    • Formula of Speed
    • Unit of Speed
    • Examples of Speed
  • Science Today – Robot  
1.3 Matter Around Us
  • Matter (Substance)  
    • Matter
    • Creation of Matter
    • Physical Nature of matter
    1. The matter is made up of particles
    2. How small is this particles of matter
    3. Colour, odour, melting point, boiling point, density
    • Chemical properties: Composition, combustibility, activity with acids and bases
  • Characteristics of Particles (Molecules) of Matter  
  • States of Matter  
    1. Solid
    2. Liquid
    3. Gas
    • The Solid State  
    • The Liquid State  
    • The Gaseous State  
  • Types of Matter  
  • Pure Substances  
    • Pure substance
    • Characteristics of Pure substance
    • Examples of Pure Substance
  • Elements  
    • Element
    • Characteristics of Element
    • Common Element
    1. In the universe
    2. In the Earth's crust
    3. Elements in the human Body
    4. Elements in air
    • Birth of the Element
  • Compound  
  • Impure Substance  
  • Mixture  
  • Separation of Mixtures  
  • Methods of Separation  
    • Filtration Method  
    • Sieving Method  
    • Churning Method  
    • Threshing Method  
    • Winnowing Method  
    • Handpicking Method  
    • Magnetic Separation Method  
    • Sedimentation Method  
    • Decantation Method  
  • Food Adulteration  
    • Food adulteration and its harmful effect
1.4 The World of Plants
  • Plant Forms and Functions  
  • Root System  
  • Types of Root System  
  • Shoot System  
  • Plant Stem  
  • Plant Leaf  
  • Habitat and Its Types  
    • Habitat
    • Types of Habitats
    1. Aquatic habitat: Fresh water Habitat and Marine water habitat
    2. Terrestrial habitat: Forest habitat, Grassland habitat, and Desert habitat
  • Modifications of Plant Parts  
    • Modification of Stems  
    • Modifications of Leaf  
1.5 The World of Animals
  • Biodiversity  
    • Biodiversity
    • Type of biodiversity
      (i) Genetic diversity
      (ii) Species diversity
      (iii) Ecosystem diversity
    • Global biodiversity and a proportionate number of species of major taxa of plants, invertebrates and vertebrates
  • Habitat and Its Types  
    • Habitat
    • Types of Habitats
    1. Aquatic habitat: Fresh water Habitat and Marine water habitat
    2. Terrestrial habitat: Forest habitat, Grassland habitat, and Desert habitat
  • Unicellular and Multicellular Organism  
  • Adaptation in Animals  
    • Adaptation in Aquatic Animals  
    • Adaptation in Reptiles  
    • Adaptation in Aerial Animals  
    • Adaptation in Desert Animals  
    • Adaptation in Mountain Animal  
    • Adaptation in Forest and Grassland Animals  
    • Adaptations in Polar Regions  
1.6 Health and Hygiene
  • Health  
    • Meaning of ‘Health’
    • Definition of ‘Health’
    • Mental health and Physical health
  • Hygiene  
  • Component of Food  
  • Component of Food: Carbohydrates  
  • Component of Food: Fats (Lipids)  
  • Component of Food: Proteins  
    • List of Essential and Non-Essential Amino Acids
  • Component of Food: Vitamin  
    • Classification of Vitamins
      1. Water-soluble vitamins
      2. Fat-soluble vitamins
  • Component of Food: Minerals  
    1. Macro-minerals
    2. Trace minerals (micro-minerals)
  • Component of Food: Water  
  • Balanced Diet  
    • Food groups can be classified according to the presence of nutrients in food
      1. Cereals and Millets
      2. Pulses
      3. Milk and Milk Products
      4. Meat and Meat Products
      5. Nuts and Oil Seeds
      6. Green Leafy Vegetables (GLVs)
      7. Root Vegetables
      8. Other Vegetables
      9. Fruits
      10. Sugar and Jaggery 
      11. Fats and Oils
    • Food groups can also be classified according to their functions
      Group 1. Energy giving foods
      Group 2. Body building group
      Group 3. Protective or regulatory foods
  • Deficiency Diseases  
  • Diseases Due Deficiency in Vitamin  
  • Diseases Due Deficiency in Proteins  
  • Diseases Due Deficiency in Minerals  
  • Effective Ways to Maintain Good Health  
  • Microorganisms (Microbes) and Microbiology  
  • Bacteria  
    • Bacteria Friends or Foes?
    • Milestones in Bacteriology 
    • General characteristic features of Bacteria
    • Ultrastructure of a Bacterial cell
    • Gram staining procedure
    • Life processes in Bacteria
    • Reproduction in Bacteria
    • Economic importance of Bacteria
    • Archaebacteria
    • Cyanobacteria (Blue Green Algae)
    • Mycoplasma or Mollicutes
    • Actinomycetes (Actinobacteria)
  • Viruses  
    • Viruses
    • Virology
    • Milestones in Virology
    • Size and Shape
    • Characteristic Features of Viruses
1.7 Computer - An Introduction
  • Computer  
  • History of Computers  
  • Generations of Computers  
  • Classification of Computers  
  • Software  
    • Need of Software 
  • Hardware  
  • Types of Software  
  • System and Application Software Types  
  • Components of a Computer  
    • Input Unit.
    • Output Unit.
    • Memory Unit.
    • Control Unit.
    • Arithmetical and Logical Unit

Tamil Nadu Board of Secondary Education Class 6 Science Syllabus for Chapter 2: Term - 2

2.1 Heat
  • Heat and Its Unit  
    • Heat
    • Unit of Heat
  • Sources of Heat  
  • Hot and Cold Objects  
  • Temperatures  
    • Temperature
    • Unit of Temperature
  • Heat and Temperature  
    • Heat and Temperature
    • Factors affecting the quantity of heat absorbed to increase the temperature of a body
    1. The mass of the body
    2. The increase in temperature of the body
    3. The material (or substance) of the body
    • Difference between heat and temperature
  • Flow of Heat  
  • Expansion of Substances (Thermal Expansion)  
    • Thermal Expansion
    • Uses of Thermal Expansion
    • Thermal Expansion Examples
    • Expansion of Solids  
      • Linear Expansion
      • Superficial or areal expansion
      • Cubical Expansion or volumetric expansion
      • Some applications in daily life
  • Numerical Problems of Heat  
2.2 Electricity
  • Electricity  
  • Sources of Electricity  
  • Heat Energy (Thermal Energy)  
  • Hydroelectric Energy  
    • Hydro-electric power
    • Production of electricity from water
    • Structure of Hydro-electric power plant
  • Nuclear Energy  
    • Nuclear Energy
    • Production of electricity from Nuclear energy
    • Atomic power stations in India
  • Wind Energy  
    • Wind Energy
    • Windmill
    • Production of electricity from wind
    • Uses of Wind Energy
  • Electric Cell  
    • Electric Cell
    • Types of Cell: Primary Cells and Secondary Cells
    1. Dry Cell
    2. Lead-Acid Cell
    3. Ni-Cd cell
    • Difference between primary cell and secondary cell
  • Battery  
    • Connecting cells
  • Electric Circuit  
    • Electric circuit
    • Circuit Diagram
    • The flow of electricity in a circuit
    • Arrangement of Circuits: Open Circuit and Closed
  • Types of Circuits: Simple Circuit  
  • Types of Circuits: Series Circuit  
  • Types of Circuits: Parallel Circuit  
  • Symbols and Functions of Various Components of an Electric Circuits  
    • Inside view of torch
    • Components of Electric Circuits
    • Symbols of Electric Components
  • Conductors and Insulators  
    • Conductors
    • Insulators (Non-Conductors)
  • Precautions to Be Taken While Using Electricity  
2.3 Changes Around Us
  • Change  
  • Classification of Change: Slow and Fast Changes  
  • Classification of Change: Natural and Man-made Changes  
  • Classification of Change: Periodic and Non-periodic Changes  
  • Classification of Change: Desirable and Undesirable Changes  
  • Classification of Change: Reversible and Irreversible Changes  
  • Classification of Change: Physical Changes  
  • Change of State of Matter  
    • Concept of Melting (Fusion)  
      • Melting (Fusion)
      • Melting point
      • Latent heat
      • Latent heat of fusion
      • Heating curve of ice during melting
      • Change in volume on melting
      • Effect of pressure on the melting point
      • Effect of impurities on the melting point
    • Concept of Boiling (Vaporization)  
      • Boiling (Vaporization)
      • Boiling point
      • Latent heat
      • Latent heat of Vaporization
      • The heating curve for water 
      • Change in volume on boiling
      • Effect of pressure on the boiling point
      • Effect of impurities on the boiling point
    • Concept of Freezing (Solidification)  
      • Freezing (Solidification)
      • Freezing point
    • Concept of Sublimation  
    • Concept of Desublimation (Deposition)  
    • Concept of Condensation (Liquefaction)  
    • Concept of Evaporation  
  • Components of Solutions  
  • Classification of Change: Chemical Changes  
    • Chemical Change
    • Properties of Chemical Change
    • Importance of Chemical Change
2.4 Air
  • Air Around Us  
    • Air Around us
    • Properties of air
    • Experiments with an empty bottle
  • Atmosphere and Its Layers  
  • Air is a Mixture  
  • Composition and Components of Air  
  • Components of Air: Nitrogen  
  • Components of Air: Oxygen  
  • Components of Air: Carbon Dioxide  
  • Components of Air: Water Vapour  
  • Components of Air: Dust and Smoke  
  • Burning and Combustion  
  • Importance of Air for Survival of Plants and Animals in Water and Soil  
  • Photosynthesis - Food Making Process in Plants  
    • Photosynthesis
    • Requirements for Photosynthesis
  • Process of Photosynthesis  
  • Importance of Air  
2.5 The Cell
  • Cell: the Fundamental Unit of Life  
    • Cell
    • Totipotency
    • Experiment: Microscopic examination of onion peel.
  • The Invention of the Microscope and the Discovery of Cell  
  • Organisms Show Variety in Cell Number, Shape and Size  
    • Cell Numbers
    • Cell Size
    • Smallness of cells: A Greater Efficiency
    • Cell Shapes: To suit Functional Requirement
  • Prokaryotic and Eukaryotic Cell  
  • Plant Cell and Animal Cell  
  • Structure of a Cell  
    • Structure of a Cell
    • Organ and Organelle
    • Plasma Membrane  
    • Semi-permeable Membrane (Cell Membrane)  
    • Cell Wall - “Supporter and Protector”  
    • Cytoplasm - “Area of Movement”  
    • Mitochondria - “Power House of the Cell”  
    • Plastids  
      • Plastids
      • Leucoplasts
      • Chromoplasts
      • Chloroplast - “Food Producers”
    • Non-living Substances Or Cell Inclusion  
      • Granules
      • Vacuoles
    • Nucleus - “Brain” of the Cell  
      • Nuclear Membrane
      • Nucleoli
      • Nucleoplasm
      • Chromatin fibres
      • Experiment: An experiment on amoeba to show that the nucleus is essential for a normal life.
2.6 Human Organ Systems
  • Human Organ System  
  • The Human Skeletal System  
  • The Human Skeleton: Axial Skeleton  
    • Axial skeleton
    1. Skull (22 bones): Cranial (8 bones), Facial (14 bones), Hyoid bone (1 bone), ear ossicles (6 bones)
    2. Vertebral Column (26 bones): Atlas, cervical region (7), thoracic region (12), lumbar region (5), sacral region (1-fused) and coccygeal region (1-fused)
    3. Sternum and Ribs: Sternum, Ribs, Bicephalic, Seven pairs, True ribs, False ribs, Veretebra-chondral ribs, Floating ribs.
  • The Human Skeleton: Appendicular Skeleton  
    • Appendicular Skeleton
    1. Forelimb (30 bones)
    2. Hind limb (30 bones)
    • Girdles
    1. Each half of the pectoral girdle consists of:
      ⇒ Clavicle
      ⇒ Acromion
      ⇒ Glenoid cavity
    2. Each half of the pelvie girdle consists of:
      ⇒ Acetabulum
  • Muscular System  
    • Structure of muscles
    • How do muscles work?
    • Coordination of Muscles
    • Antagonistic Muscles
  • Muscles and Its Types  
    1. Voluntary Muscles or Skeletal Muscles
    2. Involuntary Muscles or Smooth muscle
    3. Cardiac Muscles
  • Human Digestive System  
    • Human Digestive System
    1. Alimentary canal 
    2. Associated digestive glands
  • Human Respiratory System  
    • Conducting Part: 
    1. Nose
    2. Nasal cavity
    3. Pharynx 
    4. Larynx
    5. Trachea
    6. Bronchi
    7. Bronchioles
    8. Terminal bronchioles
    • Respiratory Part
    1. External Nostrils
    2. Nasal Chamber
    3. Pharynx
    4. Larynx
    5. Trachea
    6. Lungs: Bronchi and Alveoli
    • Stages of respiration in human being involve
  • Parts of Respiration  
    1. Breathing 
    2. Gaseous transport
    3. Tissue respiration
    4. Cellular respiration
  • Blood Circulatory System in Human  
  • Human Heart  
    • Location
    • Heart wall
    • Chambers of the heart
    • Blood vessels entering and leaving the heart
    • Valves regulate the flow of blood in a single direction
  • Blood Vessels – Arteries, Veins, and Capillaries  
  • Circulation of Blood in the Heart (Functioning of Heart)  
    • Circulation of blood in the heart
    • Pumping action of the heart
    • Conducting tissue of the heart
    • Conducting system of the heart
  • Blood  
    • Blood
    • Properties of blood
  • Heart Beat - Heart Sounds "LUBB" and "DUP"  
    • Heart Beat
    • Heart Sounds "LUBB" and "DUP"
    • Pulse
    • Pulse Rate
  • Human Nervous System  
    • Human Nervous system
    • Need of Nervous System
    • Components of Nervous System
  • The Human Brain  
    • Brain
    • How are these Tissues protected?
    • How does the Nervous Tissue cause Action?
  • Central Nervous System (CNS): Structure of Human Brain  
    • Three main parts:
    1. Cerebrum (cerebrum: brain)
    2. Cerebellum ("little brain")
    3. Medulla Oblongata
    • Three Primary Regions of the Brain:
    1. Forebrain
    2. Mid brain
    3. Hindbrain
  • The Spinal Cord  
    • Spinal Cord 
    • Functions of the spinal cord
  • Sense Organs  
  • Human Endocrine System  
    • Human Endocrine System
    • The hormones at a glance
  • Human Excretory System  
    • Kidneys
    • Sweat glands
    • Ureters
    • Urinary bladder
    • Urethra
    • Lungs
    • Kidneys
      ⇒ V.S. of kidney shows that there are two distinct regions:
      1) Renal Cortex
      2) Renal Medulla
    • Nephron
      ⇒ Structure of nephron: Glomerulus, Renal Tubule
      1) Bowman's capsule (Glomerular capsule)
      2) Proximal Convoluted Tubule (PCT)
      3) Loop of Henle
      4) Distal convoluted tubule (DCT)
      5) Collecting tubule (CT)
2.7 Parts of Computer
  • Computer  
  • Components of a Computer  
    • Input Unit.
    • Output Unit.
    • Memory Unit.
    • Control Unit.
    • Arithmetical and Logical Unit
    • Memory Unit (Memory Devices)  
  • Classification of Computers  
  • Connecting the Computer  
  • Wireless Connections  

Tamil Nadu Board of Secondary Education Class 6 Science Syllabus for Chapter 3: Term - 3

3.1 Magnetism
  • Magnet and Its Characteristics  
    • Magnet
    • Properties of a magnet
      1) Attractive Property
      2) Directive Property
      3) Laws of magnetic poles
      4) Poles exist in pairs
      5) Sure test of polarity
      6) Magnetic induction
  • Discovery of Magnets  
  • Classification of Magnets  
    • Classification of Magnets
      1) Natural Magnet
      2) Artificial Magnet
  • Magnetic and Non-magnetic Materials  
  • Magnetic Pole  
  • Finding Directions with a Magnet  
  • Magnetic Properties  
  • Demagnetization of a Magnet  
  • Care and Storage of Magnets  
  • Uses of Magnets  
  • Science Today – Bullet Trains  
3.2 Water
  • Water, Our Lifeline  
    • Introduction
    • Water: A Compound
    • Occurrence of water
  • Where Do We Get Water From?  
  • Availability of Water  
  • Composition of Water  
  • Biogeochemical Cycle  
    • Water Cycle  
      • Water Cycle
      • Evaporation
      • Sublimation
      • Transpiration
      • Condensation
      • Precipitation
      • Runoff
      • Infiltration
      • Percolation
      • Importance of water cycle
      • Human impacts on the water cycle
  • Sources of Water  
  • Water Management (Conservation of Water)  
    • Waste Water Management  
    • Fresh Water Management  
  • Scarcity of Water  
  • Importance of Water  
  • Water Distribution and Treatment System  
3.3 Chemistry in Everyday Life
  • Classification of Change: Chemical Changes  
    • Chemical Change
    • Properties of Chemical Change
    • Importance of Chemical Change
  • Applied Chemistry  
  • Soap  
    • Soap
    • Types of soaps
    1. Hard soaps
    2. Soft soaps
    • Manufacture of soap
    • Effect of hard water on soap
  • Detergents  
    • Detergents
    • Types of Detergents
    • Preparation of detergents
  • Fertilizers  
  • Cement  
  • Gypsum  
  • Epsom  
  • Important Salts in Daily Life  
    • Preparation and Uses of Plaster of Paris  
  • Phenol  
  • Adhesives  
3.4 Our Environment
  • The Environment  
  • Ecosystem  
  • Structure of an Ecosystem  
    • Biotic Components
    1. Producers
    2. Primary consumers
    3. Secondary consumers
    4. Tertiary consumers
    • Abiotic Components
    1. Sunlight
    2. Air
    3. Water
    4. Temperature
    5. Soil
    • Interaction between biotic and abiotic factors in an ecosystem
  • Classification of Animal  
    • Animal and their food
    • Classification of animal on the basis of food
    1. Herbivores
    2. Carnivores
    3. Omnivores
    4. Scavengers
    5. Decomposers
  • Food Chain  
    • Food chain
    • Importance of food chain
  • Food Web  
    • Food web
    • Advantage of Food web
  • Energy Flow in an Ecosystem  
    • Food Chain
      a) Grazing food chain (GFC)
      b) Detritus Food Chain (DFC)
    • Food Web
    • Trophic level
      a) Producers
      b) Herbivores (Primary consumer)
      c) Carnivores (Secondary consumer)
      d) Top carnivores (Tertiary consumer)
  • Trophic Levels  
  • Energy Pyramid  
  • Solid Waste Management  
  • Waste Separation Exercise  
  • Five R’s of Waste Management  
  • Pollution and Its Types  
    • Pollution
    • Pollutant
    • Types of pollution
  • Air Pollution and Its Causes  
    • Air Pollution
    • Causes of Air pollution
    • Sources of Air Pollution
  • Prevention of Air Pollution  
    • Measures to control air pollution
    • Devices to control air pollution
    1. Electrostatic precipitator (ESP)
    2. Scrubbers
    3. Catalytic converters
  • Water Pollution and Its Causes  
    • Water Pollution
    • Causes of Water Pollution
    • Sources of Water Pollution
  • Prevention of Water Pollution  
  • Soil Pollution  
    • Soil Pollution
    • Causes of Soil Pollution
    • Sources of Soil Pollution
  • Prevention of Soil Pollution  
  • Noise Pollution  
    • Noise Pollution
    • Health hazards due to noise pollution
3.5 Plants in Daily Life
  • Economic Botany  
  • Plant Forms and Functions  
  • Plants as Food  
  • Spices  
  • Medicinal Plant  
  • Fibre Yielding Plants  
  • Timber Yielding Plants  
  • Ornamental Plants  
  • Interrelationship Between Plants and Animals  
3.6 Hardware and Software
  • Computer  
  • Hardware  
  • Software  
    • Need of Software 
  • Types of Software  
  • System and Application Software Types  

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