Question

The sounds of a sitar, a bell, water that drops from a tap, and a saucer that breaks on falling down – what is it that vibrates when these sounds are produced?

Answer 1

1. Sitar: The strings of the sitar vibrate.
2. Bell: The metal body of the bell vibrates.
3. Water dropping from a tap: The water and the surface on which the drop falls vibrate.
4. Saucer breaking on falling down: The saucer vibrates when it strikes the ground, producing sound before and while it breaks.

Thus, in each case, sound is produced because some object or part of it vibrates.