Noises are formed by irregular and disordered sound vibrations. Music can be described as a beautiful or expressive arrangement of sounds. Sometimes you can feel the vibrations thunder makes while you are actually hearing it. Sound waves can even be felt by different parts of the body. And then, when these particles move slowly, a low volume of sound is produced. When these particles move fast, a high volume of sound is formed. This continued bumping cause a sound wave. The air particles then bumps into each other and then bump into others. When any object vibrates, it causes the particles to move in the air. See the fact file below for more information about sound.

These vibrations make air molecules move. For instance, when a drum or a cymbal is struck, the object vibrates.

All sounds are made by vibrations of molecules through which the sound travels. Sound is the term to describe what is heard when sound waves pass through a medium to the ear.