Physics

This chapter talks about Time, which is the duration of an event or the period between two events. Time is measured in units such as seconds, hours and minutes. You will also learn about motion and its pace in this chapter.

This chapter discusses Heat as a form of energy that makes things hot. You will also learn in this chapter that the hotness and coldness of an object depends upon the flow of heat. The temperature of an object tells the degree of hotness of an object.

In this chapter, you will learn that electric current flows through a path that is set up by an electric circuit. Electrical components include a bulb, a switch and a connecting wire. Electric currents move in the form of charges.

In this chapter, you will learn how light can be a useful form of energy. It enables us to see objects. You will also learn about how light travels in a straight line, a medium or vacuum. This chapter also talks about reflection of light.

This chapter will acquaint you about the atmosphere, which consists of air and water. Air surrounds us and exerts pressure. Further, you will also learn about wind and its characteristics—direction and speed. This chapter also discusses natural phenomena like storm and cyclone.