Sound propagates only through a material medium in wave form. How can you say that?
Sakshi Education
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As the sound is propagating in a medium, in wave form and progresses in all directions from the source, the waves are called Progressives Waves. Progessive Waves are of two kinds-
1. Transverse Waves 2. Longitudinal Waves
- Transverse Waves: In this type of waves, the particles in the medium will be vibrating perpendicular to the direction of motion of the wave. Ex: The waves formed in ropes when one end of the rope is tied to a support and the other end is moved up and down.
- Longitudinal Waves: In this type of waves, the particles of the medium move about their mean position in the same direction (along) as that of the motion of the wave.
- The motion of the spring
- propagation of sound wave in the gaseous medium (say Air)
- A Transverse Wave is associated with 'crests' and 'troughs', and
- A Longitudinal Wave is associated with 'Compressions' and 'Rarefactions'.
- The particles vibrating in the medium will transfer only energy (sound) and they will not travel along with the wave.
- In a wave, the distance between two consecutive particles which are in the same phase is called wavelength
- The particles in both Transverse and Longitudinal Waves are making simple hormonic motion either of the waves can be represented by a sine wave.
Published date : 16 Nov 2013 11:56AM