In this part of Fibre to fabric, you will be introduced to materials which are known as fibres and fabrics. You will also see the details on how fibres and fabric are in our day to day life in the form of cloth materials and yarns. Some of the concepts covered include variety in Fabric, Fibre, plant fibres, animal fibres, natural fibres, synthetic fibres, ginning, spinning, weaving and knitting and history of clothing material.
The things we all use in our daily lives are composed of different material types. All of these materials have mass, shape and are classified according to many criteria including their physical state, material properties, etc.
We all saw our parents and grandparents separating rice grains from small stones or pebbles, pulses, filtering tea leaves before serving tea, and much more. Separation of substances usually requires the practice of removing or separating the required substances from their mixtures. A substance can be classified into: the pure substance and the mixture.
We encounter different types of changes each day. Turning day into night, night into day, sun and moon rising and setting, climate change, ice melting and much more. These changes take place in one minute, or take longer. There are even few changes which are not noticeable.
Water will help revise all the important concepts of the chapter. You will learn various important concepts related to Water such as Water sources, evaporation, condensation, precipitation, drought, flood and Water cycle.
Air Around Us tells us about air, its composition and its properties. Some of the important concepts covered include the composition of air, replacement of oxygen in the atmosphere, breathing in plants and animals, and photosynthesis.