PDF chapter test TRY NOW

Take a metal plate (or a shallow frying pan). Hang it at a convenient place in such a way that it does not touch any wall. Now strike it with a stick. Touch the plate or pan gently with your finger. Do you feel the vibrations?
  
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Again strike the plate with the stick and hold it tightly with your hands immediately after striking. Do you still hear the sound? Touch the plate after it stops producing sound. Can you feel the vibrations now? 
  
After striking, we  the vibration when we lightly touch the pan with our finger.
 
When we strike the pan with a strong grip, we  the sound. The pan's vibration stops  making sound.
 
We can therefore assume that a vibrating body  sound.
Important!
This is an activity-based exercise. Do the activity and answer questions.