Question

Take two stones and strike them together and listen to the sound produced by them. Now take the stones underwater and strike them. You will find that the sound produced by the stones underwater is feeble and not very clear.

Answer 1

Observation:

We observe that the sound produced by the stones underwater is feeble and not very clear.

Conclusion: This activity shows that the speed of sound depends on the properties of the medium through which it travels.