Question

An experiment to show that sound needs a material medium for its propagation class 9

Answer 1

Answer:

here it is

Explanation:

take a glass jar or something put a bell inside it and seal it tightly so no air enter or escape, connect a pipe to it and its other end to a vacuum pump ensure the is no air inside

ring the bell

u ll not able to listen any sound as there is no air and as u know sound travels in vibration no media to vibrate means no sound

and if there density increases speed of sound increases and vice versa

plzz mark as brainliest

Answer 2

Sound is a form of energy which is produced by vibration of objects. Vibrations are rapid to and fro motion of an object.

When a body vibrates, a disturbance is created in the medium by the particles.

This disturbance travels in the form of waves. This produces sound.