We have already learnt about natural fibres in our previous classes. In this chapter, we take a detailed look on synthetic fibres i.e man-made fibre cloth. Synthetic fibres are created by chemically processing natural fibre. Some of the examples of synthetic fibres are rayon, nylon, polyester, and acrylic. Also, we will learn some important factors …
What if we tell you Mercury is a metal? Baffled? Don’t be. In this chapter, we take you through the amazing facts about metals and non-metals. We will learn about their properties, know if they are good conductors of heat and electricity, and learn about their uses. Also, we will put up some interesting facts …
Will a car or bike start without having petrol in it? It is impossible. Petrol is one of the precious resources that we need. Most vehicles in the present times run on this fuel. Petrol is obtained from petroleum, which is extracted from deep insides of the Earth. Another important resource that we find in …
One of the best ways to light a fire is by using a matchstick. What would happen if you keep a matchstick in the open air? Will it start to burn all by itself? No right! But why is this so? Well, all flammable substances have specific ignition temperature. After reaching that point, a substance …
Due to the increasing amount of carbon dioxide emissions and deforestations, Global warming has today become a reality for all of us. Increasing population demands large spaces. For this reason, forests have been changed to concrete jungles. The ascending number of vehicles releasing hazardous gases has polluted the atmosphere. But all of these can be …
Alike small bricks, when stacked together, make a building, a very special unit known as cell forms the entire human body. These cells are also known as the “building blocks of the body”. These small units are enclosed in a membrane and perform various functions of a human body. Amazing right? Want to learn more …
What does the term ‘Mortal’ mean? It means that an organism cannot live forever. We, humans, are mortal as well. If so why haven’t we gone extinct? Well, it is due to a fascinating process called the reproduction. Most living organisms reproduce and give rise to an offspring of the same species. The process of …
As you grow, you might feel some bodily changes happening. These changes bring maturity, as well as make you more emotionally and psychologically ready. But why do these changes occur at some point in time, and why not at birth? This period where you experience changes in your body and mental health is called Adolescence. …
Throwing a ball, lifting a heavy object or stopping a moving thing, all of these activities require an application of force. And what do we mean by force? Force can be defined as actions that we perform on various objects in order to move them. Force is associated with the concept of pressure. How are …
Imagine you are taking a walk, and you see a banana peel lying on the road. You tend to skip that. And why is that so? Well, the answer lies in the SCIENCE of friction. It is a type of force that resists the movement of one surface on the other. It is Friction that …
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