Question

State two application of echo

Answer 1

Answer:

echo: a series of sound wave case by the reflection of sound waves from a surface back to the listener .

Explanation:

• dolphins detect their enemy and obstacles by emitting the ultrasonic waves and hearing their echo.
• In Medical science the echo method of ultrasonic waves is used for imaging the human organ such as the liver, gall ,bladder,uterus, womb etc .This is called ultrasonography .