Unit 3

This chapter discusses the adaptation of plants and animals living in different habitats. We understand that adaptations are the characteristics of an animal’s body and habits that help them live in its suitable habitat.

This chapter describes the concept of measurement by discussing the history of transport. We understand the significance of accurate measurements and units of measurement. It also explains the notion of motion and its types.

This chapter explains how light makes an object visible to us. We learn that we can see objects with the aid of light that makes things visible to us. It presents the cause for the formation of a shadow. It also talks about the concept of reflection.

This chapter describes the structure of an electric cell and a bulb. It lists the types of light-emitting diodes. It explains how to construct an electric circuit. We also understand the working of an electric switch.

This chapter describes the concept of a magnet by introducing us to the discovery of magnets. We learn about magnetic and non-magnetic materials. It discusses the different types, properties, and uses of magnets.