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.
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