Human body is extremely fascinating. It is huge and complex. Can you tell which is the basic functional unit of our body? It is the cell. The cells show some magical properties and abilities. Cells with similar functions have the power to combine and form a bigger structure called the “Tissues”. This means – cells …
There are as many as 8.2 million species that live on earth. This only contributes to 15% of the known species. We are yet to classify and discover the remaining 85% of the species population. In such a vast world, it is practically impossible to make a count of every living creature that is a …
All living beings can’t stay in one place for hours long. Even the laziest person will show slight changes in their position. This change of position indicates that we move from one place to another. This change of position and movement is called – ‘Motion’. Not only all living organisms exhibit motion, but non-living things …
In the last chapter, we learnt that every living and non-living thing on the Earth exhibits motion. In this chapter, we will learn more about what causes the motion. This question has boggled the physicists for many centuries. To move any object, you require ‘Force’. In the same way, to stop any moving object, you …
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 …
Ever heard the annoying sound made by a mosquito near your ears? Ever wondered how these organisms are producing sound? Well, they are able to generate sound by vibrating their wings. That came out as surprise, didn’t it? Sound is a wave that is generated due to vibration, it may be the irritating sound of …
One day you wake up and hear the news that there will be no electricity for the day. Even the thought of living without electricity makes us sad. Electricity is the need of the time. All the home appliances work on electricity. Right from door-bell, to charging of laptop or phone (on which you will …
On a rainy day, while enjoying the beautiful scenery, you noticed a flash of light that blinded you for a moment. Seconds after that, you heard a loud noise. This sound is the result of that bright light that you just saw. This natural phenomenon is known as lightning. And what do we mean by …
What travels in a straight line, and helps us fight the darkness? It is named as the fastest thing around the universe. It can be seen. It can be created. It is helpful as well as threatening. What is it? To find the answer, check out these videos.
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