Write an activity to prove that sound needs a medium for propogation .

I searched it on the study material but realistic activities are needed inculing

1) Aim

2) Materials Required

3) Procedure

4) Observation / Conclusion

Thanks in adance and don't forget to wish me 'All The Best' for the exam . Tomorrow it will take place .

 AIM

TO PROVE THAT SOUND NEEDS A MEDIUM FOR PROPOGATION .

MATERIALS REQUIRED

ELECTROMAGNETIC BELL , VACCUM PUMP , GLASS JAR .

PROCEDURE

 1 ) ON THE ELECTROMAGNETIC BELL .

 2 ) MAKE SURE IT IS IN AN HORIZANTAL PLANE .

 3 ) COVER IT WITH A GLASS JAR .

 4 ) WITH THE HELP OF A VACCUM PUMP , SUCK OUT THE AIR COVERING THE ELECTROMAGNETIC BELL INSIDE THE JAR

OBSERVETION

AS SLOWLY THE AIR IS SUCKED OUT , THE SOUND OF THE BELL DECREASES . AT ONE POINT OF TIME , WHEN THE AIR IS FULLY SUCKED OUT , WE WILL NOT BE ABLE TO HEAR THE SOUND .

CONCLUSION / RESULT 

SOUND NEEDS A MEDIUM FOR PROPOGATION .

ALL THE BEST !!!!!!!!!!!!!!!!!!!!!!!!

  • 23

 Aim : To show that sound needs a medium to travel

 Material required : Mobile ; Glass ; Pen and Paper

 Procedure :

1) Firstly, kept the mobile in the glass.

2) Secondly , tell your friend to send a ring on your mobile.

3) Thirdly , when the ring strats ringing on the mobile in the glass , keep your mouth on the glass and suck the air.

Observation : We find that when we suck the air from the mobile the sound of the ring starts getting feeble and feeble.

Conclusion : By this activity we conclude that the sound needs a medium to travel and it cannot travel in the vaccum.

 HOPE GOOD FOR U.ALL THE BEST.

  • 12

 Thanks Srivatsan c and Prashant !!!

Take a thumbs up from me !!

 
  • 1
What are you looking for?