What term describes the repetition of a sound caused by sound waves reflecting off a distant surface, such as a canyon wall?

Explanation

An echo occurs when sound waves reflect off a distant, hard surface and return to the listener’s ears after a noticeable delay, allowing the original sound to be heard again separately. For a distinct echo to be perceived, the reflecting surface generally needs to be far enough away that the reflected sound arrives at least a fraction of a second after the original. This is why echoes are commonly noticed in large empty spaces, canyons, and near tall buildings, but not in small, close rooms. Explore more Everyday Science MCQs on mcqstutor to keep practicing.