Course CBSE 8 Science 18 Lessons Buy You are not enrolled for this course. Purchase this course to access updated video lessons and full course. Buy Lessons Expand All | Collapse All 01 Crop Production and Management 7 Topics 01 Agricultural Practices and Cropping Pattern 02 Preparation of Soil 03 Sowing 04 Adding Manure and Fertilisers 05 Irrigation 06 Protection from Weeds and Harvesting 07 Storage and Food From Animals 02 Microorganisms Friend and Foe 5 Topics Microorganisms: Classification and Habitat 02 Friendly Microorganisms 03 Harmful Microorganisms 04 Food Preservation and Food Poisoning 05 Nitrogen Fixation and Nitrogen Cycle 03 Synthetic Fibres and Plastics 5 Topics 01 Synthetic Fibres and their properties 02 Types of Synthetic Fibres Plastics Useful Properties of Plastics Plastic and the Environment 04 Materials: Metals and Non-Metals 4 Topics Physical Properties of Metals and Nonmetals Chemical Properties of Metals and nonmetals: Reaction with Oxygen and Water Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction Uses of Metals and Nonmetals 05 Coal and Petroleum 5 Topics 01 Natural and Manmade Resources 02 Coal 03 Petroleum 04 Natural Gas 05 Limitations of Natural Resources 6 Combustion and Flame 5 Topics 01 Combustion: Concept and Conditions 02 Types of Combustion Reaction, Ignition Temperature and Fire Control 03 Flame 04 Fuel 05 Harmful Effects of Burning Fuels 06 Conservation of Plants and Animals 5 Topics 01 Deforestation 02 Flora and Fauna 03 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve 04 Conservation of Forest and Wildlife: National Park 05 Recycling of Paper and Reforestation 11 Cell and Structure and Functions 4 Topics 01 Introduction to cell 02 Variety in Cell Number, Shape and Size Structure, Function and Parts of Cell: Basic Components Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells 12 Reproduction in Animals 5 Topics 01 Modes of Reproduction 02 Sexual Reproduction: Reproductive System 03 Sexual Reproduction: Fertilization 04 Development of Embryo 05 Asexual Reproduction 13 Reaching the Age of Adolescence 5 Topics 01 Adolescence, Puberty and Reproductive Phase of Life 02 Changes at Puberty 03 Role of Hormones in Organisms 04 Sex Determination 05 Reproductive Health 07 Force and Pressure 7 Topics 01 Force - A Push or Pull 02 Effects of Force on Objects Contact Forces Non-Contact forces Pressure Pressure exerted by Liquids Pressure exerted by Gases and Atmospheric Pressure 08 Friction 4 Topics 01 Friction Force and its Dependency 02 Friction: a Necessary Evil 03 Increasing and Decreasing the Friction 04 Fluid Friction 09 Sound 5 Topics Sound Production Propagation of Sound 03 Ear 04 Amplitude, Time Period And Frequency of Vibration 05 Noise and Music 14 Chemical Effects of Electric Current 4 Topics 01 Do Liquids Conduct Electricity? 02 Chemical Effect of Electric Current 03 Electroplating 04 Uses of Electroplating 15 Some Natural Phenomena 5 Topics 01 Electric Charge: Nature, Types and Transfer 02 Lightning: What is lightning 03 Lightning: Safety Measures Earthquakes Protection against Earthquakes 16 Light 6 Topics 01 Light: Laws of Reflection 02 Image formation by Plane Mirror 03 Multiple Images, Kaleidoscope and Dispersion 04 Human Eye 05 Care of Eyes 06 Can a Visually Challenged Persons Read and Write? 17 Stars and the Solar System 7 Topics 01 The Night Sky and the Moon 02 The Stars 03 Constellations 04 The Structure of Solar System 05 Planets in the Solar System 06 Other Members of Solar System 07 Artificial Satellites 18 Pollution of Air and Water 9 Topics Air Pollution: The pollutants Acid Rain Global Warming and Greenhouse Effect 04 The Oxygen cycle and The Ozone Layer Ways to Reduce Air Pollution Water Pollution Sources of Water Pollution 08 Pollution of Ganga River: A Case Study 09 Purification of water and ways to reduce water pollution