Answered
What is echolocation used for?
Echolocation is used by mammals such as the bat, which has poor eye sight. During evolution it developed the ability to locate a target by sending sound waves, as eyes are alm…ost useless in dark. The bat produces sounds of different frequency at different intervals. The time taken for the echo to come back gives the bat the distance of the object from the bat. The intensity of the echo gives the size of the object, and the 'slight' time difference between the sound reaching each of the ears gives the direction of the object. Rotation of the head to and fro will give the the exact location when used along with all the above. In the same way, many blind people create a sound by stumping their stick or feet to locate an object. But when sound comes from perpendicular to both ears, all animals get confused, whether it is coming from back side or front side. So Echo location is used to locate the size of object, it's distance from animal and exact location of the object. (MORE)
