Which of the following are mechanical waves?

What kind of waves are the sound waves?

Can sound waves propagate through (i) solids, (ii) liquids and (iii) gases?

Name a wave that can travel through vacuum.

Show compressions and rarefactions in a longitudinal wave.

Why do water waves die after some time?

Two person talk to each other on the surface of moon. Will they be able to hear each other?

Sound can travel through solid, liquid and gas. In which medium is its speed the maximum?

Sound travels through solid, liquid and gas. In which medium is its speed the minimum?