User:Kothuri pravalika/sandbox

Big text                                          SOUND INTRODUCTION

Imagine atleast one day of your life without any sound.Is it such an easy to communicate with others without any sound?Noo,,,,,,,,,its not such an easy task.So its clear that sound is something which is very closely related to our daily life.so lets know something about sound.

HOW SOUND IS PRODUCED? It is produced by vibrations,ie.,{to and fro motion}.When a body vibrates the medium which is in contact with it starts vibrating and then by continuing this process of motion in forward motion.ie.,sound requires a Medium for transmission..lets us now know what exactly is sound,it is a form of energy. Examples of sound

1) sound produced by                           a) talking-by movement of vocal chords b)Guitar-by vibration of strings on it.                           c)Drums- by vibration of membrane on the drum

In the above examples like talking,playing guitar,beating drums, the Mechanical energy of vocal chords,hands has been converted in to sound energy  which is sensed by our ears.There are even sounds which we cannot hear.

PROPERTIES OF SOUND

Amplitude: The maximum displacement of a vibrating particle from its mean position is called amplitude. UNITS:meter

Frequency: The number of vibrations made by vibrating particle for one second is called its Frequency. UNITS:Hertz.

Time Period: inverse of frequency.