Question

write an activity (in short) to show that sound needs a medium for its propagation.

Class:8

No need to answer if u don't know and don't copy paste from google.​

Answer 1

Answer:

sound needs medium for its propagation It can travel through a solid a liquid and a gas . when an object vibrate in air, it disturb the air particles sourrounding it and cause them to vibrate . the particles present in solids and liquids also vibrate in a similar way . sound can not propagate through a vacuum because it does not contain any particles to pass on the vibration

Answer 2

Answer:

Bell-jar experiment demonstrates that sound needs a medium for its propagation. Take an electric bell and an air tight glass bell jar connected to a vacuum pump. Suspend the bell inside the jar, and press the switch of the bell. You will be able to hear the bell ring.

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