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 …
How do you tell if something is hot or cold? By the sense of touch! Touching a hot pan will let you know that the pan is hot, and holding an ice-cream will let you know that it is cold. In this chapter, we will run through the science of HEAT. How do we measure …
The world is a mysterious place, and within it moves the Air. It passes through every corner of the world. It is the most important thing that humans need to exists. In this chapter, we will uncover some hidden facts about the Wind and the Air. We will find answers to what creates the cyclones, …
Athletes work very hard to win a race. But can you tell me the basic criterion for winning a race? It is the speed of an athlete. More the speed, more is the chances of winning. So speed is an important factor. But what is speed? Or how is it calculated? Does it show dependency …
Take this experiment. Walk towards the electrical switch board in your house. Switch on the light. Now think, how did electricity travel from the switch board to the light bulb? Electricity has changed the ways we work. Everything is dependent on electricity. This lesson is dedicated towards learning electric current and effects. Let’s begin
How do you think we are able to see things? How do our eyes perceive the visual appearance of things? The answer lies in the beautiful concept of “Light”. Sun is a primary source of light. But how does light reach us? And how does it travel from the Sun to the Earth? Watch our …
Water can be converted into ice by freezing it and ice can be again converted into water by melting. This is a simple example of Reversible change. And what about the Irreversible one? What if we burn a piece of paper? Can we get the paper, back from the ash? Definitely not! In this chapter, …
How would you know if you are farther or nearer to any object? By measuring the distance between you and the object. It is as simple as that. But before measuring, you must be familiar with all the units of measurement. Units such as centimeters, meters, kilometers help you scale the object. Understanding the applications …
Have you ever tried to pass light through a solid wooden object? We know you did, but did you notice the SCIENCE in it? No light can pass through a solid wooden material, but it does form a shadow on the ground. When an opaque object comes in between the travelling light rays, the rays …
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