Explain with the help of an activity that vibrating bodies produce sound
Answers
An activity that sound is produced by tuning fork.
(1) Take a tuning fork and big iron plate.
(2) Hit the rod by tuning fork.
(3) Then you see tuning fork is vibrating.
(4) Vibrating tuning fork produce the, sound.
(5) The sound produced by it is propagate through the medium (air). So we can hear it.
I wil provide 2 activities
Experiment 1:
Stretch a string by holding one end in mouth between the teeth and the other end
in one hand. Pluck it by the other hand near the middle.
It is noticed that the string starts vibrating and simultaneously a sound is heard.
After some time when the string stops vibrating, no sound is heard.
Experiment 2:
Take a tuning fork which is a rectangular rod of steel bent in the U shaped, with a
metallic stem at the end. Strike its one arm with a rubber hammer and bring it
near a table ball suspended by a thread.
It is noticed that as the arm of vibrating tuning fork is brought close to the ball, it
jumps to and fro and sound of the vibrating tuning fork is heard. When the arm
stops vibrating, the ball becomes stationery and no sound is heard.