This chapter discusses heat. During winter, woollen clothes help us to keep warm. During summer, light-coloured clothes help keep us cool. There are specific clothes for particular seasons.
This chapter discusses winds; how cyclones and storms occur. It also describes how air exerts pressure. Occurrence of some cyclone is also discussed here.
In this chapter, we will enhance our knowledge on the concept of electric current and its effects. We will also study the details of heating and magnetic effect of electric current. It discusses the concept of electromagnet as well.
