Applications of Ultrasound

Give reasons for the following.

Owners of dogs use the Galton's whistle.

Why do we prefer ultrasonic sound over other frequencies like X-rays for medical applications?

Why do we prefer ultrasonic frequencies for real-life applications?

A sonar device attached to a ship sends out ultrasound produced and is detected after $4$seconds. If the speed of ultrasound in sea-water is $1600 \mathrm{m}/\mathrm{s}$, what is the distance of the seabed from the ship?

Name the instrument used to receive sound waves under water.

Using sonar, sound pulses are emitted at the surface. The pulses, after being reflected from the bottom, are detected. If the time interval from the emission to the detection of the sound pulses is $2$ seconds, find the depth of the water. (take velocity of sound through water, $v=1500 \mathrm{m}/\mathrm{s}$)

Explain the technology of ultrasonography used in medical diagnosis.

Explain how cracks are determined in metal blocks.

How is ultrasound used in removing kidney stones?

How is ultrasound used in detection of fetal abnormalities?

Explain how we get the images of our heart.

What is the use of ultrasound scanner?

Explain how ultrasound can be used as an effective cleaning agent.

Give any two uses of ultrasonic in industries.

Which animal does not use the method of echolocation?

The technique of obtaining images of the heart by using ultrasound is called  

Animals like dolphin produce

What is meant by ultrasonography?

What are ultrasonic waves?