Class 6 – Science


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CLASS 6 – SCIENCE with following topics explained in details : Unit 1. Science, its Importance Unit 2. Our Universe Unit 3. Environment and its Components Unit 4. The Nature of Matter Unit 5. Changes around Us Unit 6. Separations of Substances Unit 7. Classification of Living Organisms Unit 8. Characteristics of Living  Organisms Unit 9. Structure and Functions of Plants Unit 10. Structure and Functions of Animals Unit 11. Measurements Unit 12. Motion, Force and Pressure Unit 13. Work and Energy Unit 14. Machines Unit 15. Health and Hygiene Unit 16. Technology in  Everyday Life Unit 17. Understanding the Environment

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 Unit 1. Science, its Importance  

Introduction, Study of Science, Branches of Science, Importance of  science, Contribution of some important Scientists, Aryabhatta, Nicolaus  Copernicus, Tycho Brahe, Johannes Kepler, Issac Newton, Jag dish  Chandra Bose, Salim Moizuddin Adbul Ali, Chandrasekhara Venkata  Raman, Other Scientists, Use of Science, Misuse of science, Summary

Unit 2. Our Universe

Introduction, Measuring Distances, The Stars, The Planets, Difference  between the Stars and Planets, The Solar System, The Sun, The Planets, Interesting facts about the Planets, Formation of the Earth, Differentiation  of the Earth, Life on Planets, Survival of life on the Earth, Uniqueness of the  Planet Earth in the Solar System, Different parts of the Earth, Lithosphere, Atmosphere, Hydrosphere, Importance of carbon dioxide in the Atmosphere, Green House Effect, The Oceans, Sea breeze, Land  breeze, Summary

Unit 3. Environment and its Components

Introduction, Components of an Environment, Abiotic Components, Biotic  Components, Relation between Abiotic and Biotic Environment, Food  relationships, Food chain and Food web, Energy flow in a Food chain, Socio-cultural Environment, Summary

Unit 4. The Nature of Matter

Introduction, What is Matter, Constituents of matter, States of Matter, Molecules and their arrangements, Change of phases, Properties of the  three phases of matter, Properties of Solids, Properties of Liquids, Properties of Gases, Differences between Solids, Liquids, and Gases, Physical properties of Matter, Classification of Matter, Summary

Unit 5. Changes around Us

Introduction, Causes and effects of Changes, Classification of Changes, Slow  and Fast Changes, Reversible and Irreversible Changes, Natural and  Man-made Changes, Desirable and Undesirable Changes, Periodic and  Non-periodic Changes, Physical and Chemical Changes, Difference between  Physical and Chemical changes, Changes involve Interaction, Absorption  or evolution of energy during a change, Summary

Unit 6. Separations of Substances

Introduction, Pure Substances and mixtures, What is Separation, Physical  Methods of Separation, Separating Solids from other Solids, Separating  Insoluble Solids from Liquids, Separating Soluble Solids from Liquids, Separating Immiscible Liquids, Separating solids from gases, Separation of  gases, Separation using more than one method, Summary

Unit 7. Classification of Living Organisms

Introduction, The concept of Classification, Advantages of Classification, Units of Classification, Classification of Plants, Flowering Plants, Non-flowering Plants, Classification on the basis of size of Plants, Other  methods of Classification, Classification of Animals, Naming Living Organisms, Common Names, Scientific Names, Economic importance of  Plants, Economic importance of Animals, Summary

Unit 8. Characteristics of Living Organisms

Introduction, Types of Characteristics, Living things have Definite Shape  and Size, Living things are made up of Cells, Living things Move, Living  things are Sensitive, Living things Need Food to Live, Living things Respire, Living things Excrete, Living things Grow, Living things Reproduce, Living things have a Definite Life Span, Living Things adapt to their  Environment, Differences Between Living Things And Non-Living Things, Differences between Plants And Animals, Summary

Unit 9. Structure and Functions of Plants

Introduction, Root system in Plants, Characteristics of a root, Parts of a  root, Types of root system, Modification of Roots, Functions of Root, The  Shoot System in plants, The Stem, The Leaf, The Flower, The Fruit, Summary

Unit 10. Structure and Functions of Animals

Introduction, The Digestive System, The Respiratory System, The  Circulatory System, The Heart, Blood Vessels, Blood, Movement of blood in  he Heart, The Nervous System, The Excretory System, The  Reproductive System, The Muscular System, The Skeletal System, The  Integumentary System, The Endocrine System, Summary

Unit 11. Measurements

Introduction, Need for Measurement, Need for Standard Unit, Standard  Unit, Points to be remembered while taking measurements, Fundamental  and derived units, Measurement of Length, Measurement of length with  metre scale, Measuring small thickness, Measuring the length of curved  line, Measuring the diameter of spherical objects, Proper use of instrument, Beware before you buy, Measurement of Volume, Measurement of the  volume of a Liquid, Measurement of Area, Measurement of Mass, Beam  Balances, Physical balance, Measurement of weight, Measurement of  Temperature, Clinical Thermometer, Measurement of Time, Role of the  department of weights and measures, Summary

Unit 12. Motion, Force and Pressure

Introduction, Types of Motion, Translatory Motion, Circulatory Motion, Oscillatory Motion, Periodic Motion, Repetitive Motion, Random Motion, Speed, Uniform speed, Variable speed, Velocity, Force, Effects of force, Types of forces, Units of force, Mass and Weight, Pressure, Unit of Pressure, Atmospheric pressure, Liquid Pressure, Role of pressure in daily life, Summary

Unit 13. Work and Energy

Introduction, Work, Energy, Forms of Energy, Mechanical Energy, Heat  Energy, Chemical Energy, Sound Energy, Light Energy, Electrical Energy, Magnetic Energy, Atomic Energy, Transformation of Energy, Work energy  relationship, Sources of Energy, Energy Conservation, Summary

Unit 14. Machines

Introduction, Machines and types of machine, Kind of Simple Machines, The lever, The pulley, The inclined plane, The screw, The wheel and axle, Uses of Machines, Weighing Machines, The Steel yard, The platform  balance, Care of machines, Summary

Unit 15. Health and Hygiene

Introduction, Conditions necessary to keep Good Health, Factors affecting  Health, Personal Hygiene, Cleanliness, Physical Exercise, Rest and Sleep, Healthy Habits, Hair care, Oral hygiene, Care of sense organs, Health and  food, Community Hygiene, Summary

Unit 16. Technology in Everyday Life

Introduction, Water, Water Filters, Types of Filters, Water Treatment, Physical Treatment, Chemical Treatment, Crystallization, Separation of  crystals in Industry, Weight, Weight Measurement, Weighing loaded  Trucks, Weighing chemicals in Laboratories, Summary

Unit 17. Understanding the Environment

Introduction, The environment – Social and Natural, Human dependence  on the Environment, Interdependence in Plants and Animals, Dependence  of Animals on Plants, Dependence of Plants on Animals, Natural Resources, Air as a Natural Resource, Water as a Natural Resource, Soil as a Natural  Resource, Minerals as a Natural Resource, Sunlight as a Natural Resource, Over utilization of Resources, Waste Management, Generation of Solid  Waste, Sources of Solid Waste, Types of Solid Waste, Hazards of solid waste  Accumulation, Modes of disposal of solid waste, Generation of Liquid  Waste, Sources of Liquid Waste, Types of Liquid Waste, Hazards of Liquid  Waste, Management of Liquid Waste and its Disposal, Generation of Gaseous Waste, Sources of Gaseous Wastes, Types of Gaseous Waste, Hazards of  Gaseous Waste Accumulation, Modes of Disposal of Gaseous Waste, Conditions for proper Waste Management, Summary


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