Learn about production and characteristics of sound through an interactive conversation between a curious teenager and an indulgent teacher. Through demonstrations and interesting question answer sessions, the lesson shows how sound is propagated, why you cannot hear sound in vacuum, and how the speed of sound differs in various media. Live examples bring out the different characteristics of a sound wave.

The examples on production and propagation of sound enable you to find the wave length of a wave, and the speed of sound in air.

This experiment enables you to determine the velocity of a pulse propagated through a stretched string or slinky.

This section will give you a summary of the lesson - Production and Propagation of Sound