Sound waves 8

Match it! Select the correct answer from the pull down...Good luck!

Sound wave is :

The time separating production of sound and receiving its echo is t=2 sec ( Velocity of sound in air is 340m/sec then the distance is :

Sound propagates in:

Sounds whose frequencies Below 20 Hz is :

Echo is a bounce of sound on an obstacle by :

Our Ears are :

Sound wave cannot propagate in

Ultra sounds have frequencies :