Sound is an energy

Just like other energy like muscular energy, kinetic energy etc, sound is also an energy

 

Law of Conservation of Energy applies to sound also

When energy changes form from one form to other but total energy remains constant

Example When we clap,we produce a sound, This is because muscular energy of our hands transfer to sound energy

 

Sounds must travel through a medium

Medium means a matter or substance through which sound travels. It can be solid, liquid or gas

Sound normally travels through air, However it can also travel through liquids and solids

Note - Sound does not travel through vacuum (as it is not a medium)

 

Sound is a Wave

Sound travels in to and fro motion (moves left and right)

It is produced through vibration of different objects

 

Let's learn what a wave is

  1. Class 9
  2. Chapter 12 Class 9 - Sound

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.