Question

in which medium air or water an echo is heard sooner?and why?

Answer 1

In water because sound travels partical to partical & we all know that water has more compact particals ( inter molecular spaces) then air.

Answer 2

Answer:In water echo will be heard sooner than air.

In the medium , in which sound have high velocity .

Explanation:As velocity of sound is higher in solids than in liquids , in turn high in liquids than gases . So in water echo will be heard sooner than air.