why can the sound but travel through vacuum ? Describe an experiment in support of your answer
Answers
Answer:
Answer. Sound cannot travel through a vacuum. Because it needs a medium(air,water,solids) to travel.
Explanation:
Sound cannot travel through vacuum as it is a mechanical wave that requires a material medium for its propagation, sound travels with repeated compressions and rarefactions in gases, hence it cannot travel through vacuum.
The Bell Jar Experiment can be used to demonstrate this. A bell jar containing an electric bell with a switch attached is taken, an air pump is attached to it, the switch is placed in the on position, the bell is heard loudly and clearly, now, the air is removed using the air pump, the sound becomes dimmer and dimmer and when all the air has been evacuated from the Bell Jar, the sound is no longer heard even when the hammer of the bell is repeatedly banging, this shows that sound cannot travel in vacuum.