All solid materials can produce reflected sound known as echo ? ​

Actually, not all solid materials can produce a clear echo. An echo happens when sound bounces off a hard and smooth surface, like a wall or a mountain, and comes back to you after a short time. For an echo to happen, the place needs to be quiet and the surface must be far enough—usually about 17 meters away. Some solid materials, like soft wood or cloth, absorb sound instead of bouncing it back. That’s why you don’t always hear an echo even if there are solid things around. So, while many solid materials reflect sound, not all of them can create a real echo.

Answered by KRAKENqt | 2025-08-06