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Ultrasonic images are known as sonograms. In this process, pulses of ultrasound

are sent to the tissue using a probe. The sound echoes off the tissue, where different
tissues reflect sound varying in degrees. These echoes are recorded and displayed

an image.

Lithotripsy:

Ultrasonic waves are used to break stones in the kidney. High energy sound
waves are passed through the body without injuring it and break the stone into small

pieces. These small pieces move through the urinary tract and out of the body more
easily than a large stone.

Echolocation:

Echolocation is the process where sound waves and echoes are used to determine

objects in space. Echolocation is used by bats to navigate and find their food in the

dark. Bats send out sound waves from their mouth and nose, which then hit the
objects in their vicinity producing echoes, which are then received by the bats. The

nature of the echo helps them determine the size, the shape and the distance of the

object.