Page 5 - SoundWaveModule
P. 5
Give your prediction why
1. Sound Wave Characteristics
Sound is a longitudinal wave.
Only propagates through solid, seek, and gaseous mediums.
In other words, it cannot propagate in a vacuum.
The speed of sound is affected by the density of the medium
for its propagation. Sound will travel faster in a medium that
has a high density, i.e. a solid medium.
Sound can bounce if the wave hits an object.
2. Sound Wave speed
Sound is a longitudinal wave that can propagate in solid, liquid and gaseous mediums. The
speed of sound in air can be determined by the following equation:
v : velocity of sound propagation
λ : the wavelength of sound
f : sound frequency
The speed of sound depends on the properties of the medium, so sound has a speed that is
influenced by two factors:
1. The density of the particles of the medium through which sound travels. The denser the
arrangement of the medium particles, the faster the sound propagates, so sound travels
the fastest in solids.
2. Medium, the hotter the temperature of the medium through which it passes, the faster
the sound propagates.