Heat Heat is the transfer of energy from a hot body. The sense of touch can be used to understand the degree of hotness or coldness of something. But the sense of touch is not reliable and canno…
Animal fibres → Wool and silk fibres are obtained from animals. → Wool is obtained from the fleece (hair) of fleece sheep or yak. Silk fibres come from cocoons of the silk moth. Wool → Woo…
Introduction In the previous chapter we learned that plants can prepare their own food by photosynthesis but animals cannot. Animals get their food from plants, either directly by eating plant…
Introduction All living organisms such as plants and animals require food. So food is essential for all living organisms. Plants are capable of making their food themselves but humans and an…
Solid Liquid & Gas Fig:States of Matter Solid: Solid has definite shape and definite volume. Examples: Stones, wood, plastic, common salt, steel, ice, glass, etc. Liquid: Liquid h…
Human beings exhibit locomotion. Locomotion is brought about by the combination of muscular and skeletal system. The bending and movement of the skeleton is brought about by special structures cal…
Getting to Know Plants Plants can be classified on the basis of their height, stem and branches. On these parameters, plants can be of three types, viz. herbs, shrubs and tree. Herbs: Herb…
In our day to day life, you will observe many changes around us. Day changes into night and night in day, you can observe a sudden change in weather, the flowering of plants, milk changing into …
