Question

Dolphins also scan using ultrasound. A dolphin hears an echo from a fish 0.02 seconds after it makes a noise (speed of sound in water is 1500 m/s)
(a) How far has the ultrasound wave travelled?
(b) How far away is the fish?
(c) The dolphin swims closer to a distance of 9m from the fish, how long will it take to hear the echo?
(d) Other than medical imaging, give one other example of scanning using ultrasound

Answer 1

Hii so this your ans. this what I got....

Animals such as bats and dolphins send out ultrasound waves and use their echoes, or reflected waves, to identify the locations of objects they cannot see. This is called echolocation. Animals use echolocation to find prey and avoid running into objects in the dark. You can see in the Figure below how a bat uses echolocation to find insect prey.

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