Question

When you are in an empty auditorium, you can hear many echos by making a sound. But when the auditorium is full with spectators, echos can not be heard clearly or sometimes at all. Explain why.

Answer 1

Answer:

their is less space to move the sound waves.it moves and echo's when it struck to a solid.

Explanation:

if it is wrong plz sorry

Answer 2

the reason is the boul have water make a sound the waves are slowly pass in water and empty vessel have air contain the so easily vibration when make a sound