Physics

This chapter explores the concept of light. It describes the concepts such as light rays, shadows, and laws of reflection and refraction. It also comprises fun experiments that help us make periscope, spectrum, Newton's disc, and pinhole cameras.

This chapter deals with the concept of sound. It provides an illustration of how sounds are made and how we hear sounds. We will also understand the measurement of the speed of sound. It also briefs on loudness, echo and pitch.

This chapter provides knowledge of measuring motion. It teaches us how to measure distance, speed, average speed, and time. It helps us measure the average walking speed. It also illustrates the distance-time graphs.

This chapter discusses the discovery of magnets. It describes magnet, uses of magnets magnetic materials, magnetism and magnetic field lines. It also discusses magnetic field lines, electromagnets and their uses.

This chapter provides a practice exam paper for students. It covers questions from all the chapters of the book, which helps them test their preparation level for the examination.