What are the properties of sound waves?
sound waves are mechanical waves so they need a medium for propagation.
The most fundamental properties of sound waves are:-
Most of the other properties like speed,intensity etc. can be calculated from the above three quantities.
I have listed some below
- They are longitudinal in nature - that means the disturbances are parallel to the direction of motion of the wave.
- The cannot travel through a vacuum. They need a medium to travel through.
- They travel fastest through solids and slowest through gases.
- They obey the wave equation
#v=f lambda#and their speed through air at sea level is approximately #340 m//s#
- They can be reflected and obey the law of reflection.
- They can be refracted, diffracted, undergo superposition (interference), etc.
- Their frequencies may appear different to observers in relative motion due to the Doppler Effect.