How Things Work

This chapter deals with the concept of distance. We will learn to measure distance along with its units. Motion and its types are also explained in detail here. It also discusses the development of transport.

This chapter talks about light, its sources and propagation. It discusses the nature of objects along with the phenomenon of the formation of shadow. The mechanism behind a pinhole camera is also explained here.

This chapter introduces us to electricity. It explains the working of an electric cell. We will also learn about electric current, circuit, switch, bulb and torch. The properties of conductors and insulators are also explained in detail.

This chapter explains the types, uses, properties, discovery and the making of magnets. We will also learn to distinguish magnetic materials from non-magnetic materials. Demagnetization and storing of magnets are also discussed in detail.