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Take an electric bell and hang this bell inside an empty bell-jar fitted with a vacuum pump (as shown in the following figure).

Initially, one can hear the sound of the ringing bell. Now, pump out some air from the bell-jar using the vacuum pump. It will be observed that the sound of the ringing bell decreases. If one keeps on pumping the air out of the bell-jar, then at one point, the glass-jar will be devoid of any air. At this moment, no sound can be heard from the ringing bell although one can see that the prong of the bell is still vibrating. When there is no air present inside, we can say that a vacuum is produced. Sound cannot travel through vacuum. This shows that sound needs a material medium for its propagation.

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15y ago

take a plastic ruler .place the ruler on the table top such that 10 cm of ruler projects out from the edge of the table .

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Q: Experiment to demonstrate that sound need a material medium to propagate?
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Related questions

Where does sound not propagate?

sound needs a material medium to travel. Sound can travel by compression and rarefactions.attma


Medium for the wave?

The medium of any wave is the material that the wave energy travels through; in this case water.


What is meant by the medium of a wave?

Waves need a medium to propagate themselves through. The waves generated on a pond by a falling droplet need a medium, in this case its the very water of the pond. Sound waves can propagate both though a water medium or an air medium for example. Electromagnetic waves are an exception in that they do not need a medium to propagate through (the can propagate through the void of interstellar space).


How do sound waves spread or propagate from the source toward the space around it?

Sound disturbance is propagated by compressions and rarefactions through the air medium. Air is a material medium. If such a material medium is absent then sound waves cannot be propagated. These compressions and rarefactions confirm that the wave is of longitudinal in nature.


What does sound like?

A medium in which to propagate


What is an experiment to demonstrate that sound requires a medium to travel?

Making some sound (ringing a bell, dropping an object, etc.) inside a vacuum.


Do mechanical waves require a medium?

Yes, mechanical waves require a medium to travel through. This medium can be a solid, liquid, or gas. Without a medium, such as in empty space, mechanical waves cannot propagate.


What is characteristics of a wave?

They need a medium to propagate through.


Can a wave travels without medium?

1) Electromagnetic waves2) Gravitational waves Actually, both of these use empty space as a medium - but the point is that they require no additional material, as when a sound wave requires atoms to propagate.


Why sound waves travels faster through a solid than gas?

its an easy question. you know sound needs material medium to propagate {or move} and the atoms in solids are bound more closely than air. and thus when sound travels its easy for its waves to propagate through solids as the atoms {material medium} are more close than in air and on the contrary the molecules {larger parts of atoms ,who serve as material medium } of air are losely bound and its a bit harder for the waves to travel from one point to another.


Does sound exist in space?

No. Sound needs a medium to propagate.


What is a characteristics of a mechanical wave?

They need a medium to propagate through.