Chapters covered in Samacheer Kalvi Solutions for Science [English] Class 8 TN Board
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 1: Measurement
Concepts covered in Measurement are Accuracy in Measurements, Approximation, Base Quantities and Units, Clocks, International System of Units (Si System), Measurements, Physical Quantities, Rounding off, Unit and Its Types, Unit Systems.
Samacheer Kalvi Class 8 Science (Class 8) 1: Measurement exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 41 | 9 to 10 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 2: Force and Pressure
Concepts covered in Force and Pressure are Advantages and Disadvantage of Friction, Application of Pascal’s Law, Atmospheric Pressure, Buoyancy Force (Upthrust Force), Effect of Force, Factors Affecting Pressure, Force, Force of Friction, Increasing and Reducing Friction, Kinds of Friction, Measurement of Atmospheric Pressure, Mercury Barometer (Simple Barometer), Pascal’s Law, Pressure of liquid, Surface Tension, Thrust and Pressure, Viscous Force or Viscosity.
Samacheer Kalvi Class 8 Science (Class 8) 2: Force and Pressure exercises
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 3: Light
Concepts covered in Light are Concave Mirror, Convex Mirror, Dispersion of Light Through Prism and Formation of Spectrum, Images Formed by Spherical Mirrors, Introduction to Refraction of Light, Law of Reflection of Light, Light, Mirrors, Multiple Reflections, Prism, Refractive Index, Spherical Mirrors, Types of Reflection.
Samacheer Kalvi Class 8 Science (Class 8) 3: Light exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 26 | 33 to 34 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 4: Heat
Concepts covered in Heat are Calorimetry and Calorimeter, Conduction, Convection, Effects of Heat, Heat and Its Unit, Radiation, Scales of Thermometers, Specific Heat Capacity, Thermal Capacity (Heat Capacity), Thermos Flask (Dewar Flask), Thermostat, The Temperature and a Thermometer, Transfer of Heat.
Samacheer Kalvi Class 8 Science (Class 8) 4: Heat exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 35 | 43 to 44 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 5: Electricity
Concepts covered in Electricity are Chemical Effects of Electric Current, Direction of the Electric Current - Conventional and Electronic Flow, Effects of Electric Current, Electric Charge, Electric Circuit, Electric Field, Electric Force, Electricity, Electroscope, Flow of Charges (Electrons) Between Conductor, Heating Effect of Electric Current, Lightning and Lightning Safety, Structure of an Atom, Transfer of Charges, Types of Circuits: Parallel Circuit, Types of Circuits: Series Circuit, Types of Circuits: Simple Circuit.
Samacheer Kalvi Class 8 Science (Class 8) 5: Electricity exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 33 | 57 to 58 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 6: Sound
Concepts covered in Sound are Audibility and Range, Characteristics of a Sound Wave, Hearing Loss, Human Ear, Loudness and Intensity, Noise Pollution, Pitch (or shrillness) and frequency, Production of Sound, Propagation of Sound, Properties of Sounds, Quality (Or Timbre) and Wave Form, Sound, Sound and Music, Sound Produced by Humans.
Samacheer Kalvi Class 8 Science (Class 8) 6: Sound exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 35 | 69 to 70 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 7: Magnetism
Concepts covered in Magnetism are Artificial Magnets, Classification of Magnets, Discovery of Magnets, Earth’s Magnetism, Magnet, Magnetic Field, Magnetic Materials, Magnetic Properties, Uses of Magnets.
Samacheer Kalvi Class 8 Science (Class 8) 7: Magnetism exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 25 | 81 to 82 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 8: Universe and Space Science
Concepts covered in Universe and Space Science are Concept of Space Missions, Galaxy and Its Types, Indian Scientist, Indian Space Research Organization (ISRO), India’s Space Programmes: Chandrayaan – 1, India’s Space Programmes: Chandrayaan – 2, India’s Space Programmes: Mangalyaan (Mars vehicle), NASA Space Mission: Apollo Mission, NASA’s work with ISRO, National Aeronautics and Space Administration (NASA), Propellants and Its Types, Rockets and Its Structure, Space Launch Technology, The Solar System, The Universe, Work of Indians at NASA.
Samacheer Kalvi Class 8 Science (Class 8) 8: Universe and Space Science exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 28 | 92 to 93 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 9: Matter around us
Concepts covered in Matter around us are Characteristics of Particles (Molecules) of Matter, Compound, Elements, Matter (Substance), Physical Properties of Metals, Physical Properties of Non-metal, States of Matter, Symbols Used to Represent Atoms of Different Elements, The Gaseous State, The Liquid State, The Solid State, Type of Element: Metalloid, Types of Compound, Types of Element: Metals, Types of Element: Non-metal.
Samacheer Kalvi Class 8 Science (Class 8) 9: Matter around us exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 36 | 101 to 103 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 10: Changes around us
Concepts covered in Changes around us are Chemical Reaction, Effects of Chemical Changes: Biological Effects, Effects of Chemical Changes: Environmental Effects, Effects of Chemical Changes: Production of Heat, Light, Sound and Pressure, Factors Determining Chemical Changes.
Samacheer Kalvi Class 8 Science (Class 8) 10: Changes around us exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 44 | 111 to 113 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 11: Air
Concepts covered in Air are Acid Rain, Air Around Us, Air is a Mixture, Carbon Dioxide, Composition and Components of Air, Global Warming, Green House Effect, Importance of Carbon Dioxide, Importance of Nitrogen, Importance of Oxygen, Nitrogen Fixation, Occurrence of Nitrogen, Occurrence of Oxygen, Preventive Measures of Acid Rain, Preventive Measures of Global Warming, Preventive Measures of Green House Effect, Properties of Carbon Dioxide, Properties of Nitrogen, Properties of Oxygen.
Samacheer Kalvi Class 8 Science (Class 8) 11: Air exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 24 | 122 to 123 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 12: Atomic Structure
Concepts covered in Atomic Structure are Advantage and Limitations of Thomson’s Atomic Model, Advantages and Limitations of Dalton’s Atomic Theory, Atoms: Building Blocks of Matter, Balancing Chemical Equation, Chemical Equation, Chemical Formula or Molecular Formula, Dalton’s Atomic Theory, Different Valent Ions, Different Ways to Determine Valency, Discovery of Charged Particles in Matter, Electrons (e), Ions (Radicals) and Its Types, J. J. Thomson’s Atomic Model, Law of Conservation of Mass, Law of Constant Proportions (Law of Definite Proportions), Laws of Chemical Combination, Naming Chemical Compounds, Neutrons (n), Protons (p), Valency, Variable Valency.
Samacheer Kalvi Class 8 Science (Class 8) 12: Atomic Structure exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 26 | 136 to 137 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 13: Water
Concepts covered in Water are Advantage and Disadvantage of Hard Water, Chemical Properties of Water, Classification of water: Soft and Hard Water, Composition of Water, Electrolysis of Water, Physical Properties of Water, Potable Water, Preparation of Water, Prevention of Water Pollution, Purification of Water, Removal of Hardness of Water, Water - a Universal Solvent, Water: Our Lifeline, Water Pollution and Its Causes, Water Pollution in Tamilnadu.
Samacheer Kalvi Class 8 Science (Class 8) 13: Water exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 36 | 153 to 154 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 14: Acids and Bases
Concepts covered in Acids and Bases are Acids, Bases (Alkalis), Indicators, Neutralization Reactions in Our Daily Life, Properties of Acids, Properties of Bases (Alkalis), Similarities and Differences Between Acids and Bases, Types of Double Displacement: Neutralization Reaction, Uses of Acids, Uses of Bases.
Samacheer Kalvi Class 8 Science (Class 8) 14: Acids and Bases exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 36 | 164 to 165 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 15: Chemistry in Everyday Life
Concepts covered in Chemistry in Everyday Life are Bio-energy, Electricity Generation using Solar Energy, Extraction of Coal, Fuel, Fuel Efficiency, Hydrocarbons, Natural Gas, Non-crystalline/Amorphous Forms: Coal, Non-crystalline/Amorphous Forms: Coke, Other Gases, Petroleum, Refining of Crude Petroleum, Sources of Hydrocarbons, Types of Fuel.
Samacheer Kalvi Class 8 Science (Class 8) 15: Chemistry in Everyday Life exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 22 | 178 to 179 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 16: Microorganisms
Concepts covered in Microorganisms are Algae, Bacteria, Fungi, Harmful Microorganisms, Microorganisms (Microbes) and Microbiology, Prions, Protozoa, Relationship Between Man and Microbes Balances, Imbalances and Uses, Useful micro-organisms, Virions, Viruses.
Samacheer Kalvi Class 8 Science (Class 8) 16: Microorganisms exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 33 | 189 to 190 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 17: Plant Kingdom
Concepts covered in Plant Kingdom are Biodiversity, Division I-Gymnosperms, Division II- Angiosperms, Division II- Bryophytes, Division III- Pteridophytes, Kingdom Plantae: Thallophyta (Algae), Kingdom Plantae: Thallophyta (Fungi), Medicinal Plant, Nomenclature, Taxonomy and Systematics.
Samacheer Kalvi Class 8 Science (Class 8) 17: Plant Kingdom exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 45 | 202 to 203 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 18: Organisation of Life
Concepts covered in Organisation of Life are Biological Organisation in Organisms, Cell: Structural and Functional Unit of Life, Concept of Osmosis, Homeostasis, Human Eye, Human Organ System, Human Respiratory System, Mechanism of respiration-Breathing, Metabolism, Organisms Show Variety in Cell Number, Shape and Size, Osmoregulation, Osmotic Pressure, Physiological Processes in Organisms, Simple Diffusion, Tissues - “The Teams of Workers”, Types of Respiration: Aerobic and Anaerobic Respiration.
Samacheer Kalvi Class 8 Science (Class 8) 18: Organisation of Life exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 38 | 215 to 217 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 19: Movements in Animals
Concepts covered in Movements in Animals are Biodiversity, Human Body and Its Movements, Human Skeleton System, Joints and Its Classification, Movement and Locomotion, Movement in Different Animals, Muscles and Its Types, Muscular System, The Human Skeleton: Appendicular Skeleton, The Human Skeleton: Axial Skeleton, Types of Movements.
Samacheer Kalvi Class 8 Science (Class 8) 19: Movements in Animals exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 40 | 230 to 231 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 20: Reaching the Age of Adolescence
Concepts covered in Reaching the Age of Adolescence are Adolescence and Puberty, Changes at Puberty, Menstrual Cycle (Ovarian Cycle), Nutritional Needs of Adolescents, Personal Hygiene for Adolescence, Reproductive Health, Reproductive Phase of Life in Humans, Role of Hormones in Initiating Reproductive Function, Secondary Sex Characteristics.
Samacheer Kalvi Class 8 Science (Class 8) 20: Reaching the Age of Adolescence exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 41 | 241 to 242 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 21: Crop Production and Management
Concepts covered in Crop Production and Management are Agricultural Assistance Programme, Agricultural Implements, Agriculture Research Institutions, Bio-control Methods, Bio-indicators, Crop and Its Types, Fertilizers, Foliar Sprays, Food Security, Food Storage and Conservation of the Environment, Harvesting of Crops, Improved methods of agriculture, Manuring (Biomanuring), Methods to Replenish Nutrients in Your Soil, Rotation of Crops, Seed Bank, Soil Formation and Preparation for Agriculture, Storage of Food Grains, The Green Revolution, Weeding.
Samacheer Kalvi Class 8 Science (Class 8) 21: Crop Production and Management exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 23 | 257 to 258 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 22: Conservation of Plants and Animals
Concepts covered in Conservation of Plants and Animals are Afforestation, Animal Welfare Organisations, Biomagnification, Causes for Endangerment, Classification of Threatened Species, Consequences of Deforestation, Conservation of Forest, Conservation of Wildlife, Deforestation and Its Causes, PBR (People’s Bio-diversity Register), Red Data Book, Reforestation, Saving Endangered Species.
Samacheer Kalvi Class 8 Science (Class 8) 22: Conservation of Plants and Animals exercises
| Exercise | No. of questions | Pages |
|---|
| Exercises | 30 | 274 to 275 |
Samacheer Kalvi Solutions for Class 8 Science (Class 8) 23: Libre Office Calc
Concepts covered in Libre Office Calc are Functions, Generate Auto Numbers, Libre Office Calc, Merge Cells, Operators in Libre Office Calc, Spreadsheet, Working with Charts, Worksheet and Workbook.
Samacheer Kalvi Class 8 Science (Class 8) 23: Libre Office Calc exercises
Samacheer Kalvi Solutions for Science [English] Class 8 TN Board
Class 8 Samacheer Kalvi solutions answers all the questions given in the Samacheer Kalvi textbooks in a step-by-step process.
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Our Tamil Nadu Board of Secondary Education Samacheer Kalvi solutions for Science Class 8 cover everything from Measurement, Force and Pressure, Light, Heat, Electricity, Sound, Magnetism, Universe and Space Science, Matter around us, Changes around us, Air, Atomic Structure, Water, Acids and Bases, Chemistry in Everyday Life, Microorganisms, Plant Kingdom, Organisation of Life, Movements in Animals, Reaching the Age of Adolescence, Crop Production and Management, Conservation of Plants and Animals, Libre Office Calc and the other topics.
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