Moving Things, People and Ideas

In this chapter, we will learn about the different effects that a force has on objects and the different types of forces in nature. We will also learn about friction, its advantages and disadvantages, and the methods of reducing and increasing friction.

This chapter deals with the concept of pressure, its applications. We will also get to learn, with activities and fact files, about fluid pressure and the variation of atmospheric pressure with altitude.

In this chapter, we will learn about sound, its production, and its other characteristics. We will also discuss the types of sound, the musical instruments, and the effects of noise pollutions.