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 …
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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