Characteristics of Sound Waves

Sound

A form of energy caused by vibration

Characteristic of sound

Sound can be reflected and absorbed

Transfer of sound

Sound can propagate through a liquid, solid and gas, but not through vacuum

Example of transfer of sound

Transfer of sound from bell to the ears of the listener

Speed of transfer of sound in solids

Sound is transferred very rapidly in solids

Speed of transfer of sound in liquids

Sound transferred less rapidly compared to solids

Speed of transfer of sound in gases

Sound waves propagate very slowly in gases

Good sound reflectors

Hard and smooth surfaces

Good sound absorbers

Soft and rough surfaces

Examples of good sound absorbers

Wall, carpet and softboard