2007-02-15 16:18:14 · 6 answers · asked by matt 1 in Science & Mathematics ➔ Physics
Because sound waves can't travel through a vacuum (which is the absence of a molecular medium). Sound are pressure waves. To have pressure, you need "stuff" or matter (and zero matter is a vacuum).
2007-02-15 16:25:23 · answer #1 · answered by Kitiany 5 · 1⤊ 0⤋
The answer is already in the Question my friend =) A. Longitudinal wave..here's the explaination: 'Sound Waves' travel through a medium.... this is written in the question. Sound waves is a type of Longitudinal Wave, and ONLY sound waves is Longitudinal Wave =) For Transverse Wave, it is light wave, water wave, X-ray and so on that are shown in Electromagnetic Spectrum list. For Longitudinal Wave : the particles of the medium move parallel to the wave motion For Transverse Wave : the particles of the medium move PERPENDICULAR to the wave motion A simple way to memorize the type of wave is that, for Transverse Wave, the initial is Letter T. So, it will shown like a zig zag image like you see a wave of water, zig zag or shall we say 'wave like shape' =) As for Longitudinal Wave, you can differ it from Letter T. Hope this simple explaination help you my friend =) I wish best luck of you in Physics
2016-05-24 05:50:30 · answer #2 · answered by Deborah 4 · 0⤊ 0⤋
the sound waves propagate in a medium by vibration between the particles of a medium and when there is no medium, then these waves can,t propagate as there is no particles which can vibrate and propagate the sound wave
2007-02-15 21:43:03 · answer #3 · answered by Jimmy 2 · 0⤊ 0⤋
Because it is the interaction of the molecules in the medium which transmits sound.
2007-02-15 16:21:12 · answer #4 · answered by Anonymous · 2⤊ 0⤋
They are compression waves: they need to compress something and that something is the medium.
2007-02-15 16:24:21 · answer #5 · answered by Raymond 7 · 2⤊ 0⤋
sound is produced due to alternative compression and rarefaction of particles. thus particles of mediums are required.
2007-02-15 16:27:52 · answer #6 · answered by Anonymous · 1⤊ 0⤋