How are ultrasound waves made?

What are ultrasound waves?

What is the rough frequency of most ultrasound waves?

What can ultrasound be used for?

What else is ultrasound used for?

What do the rest of the ultrasound waves do?

How can ultrasound be used in medical imaging?

What can ultrasound waves produce in medical imaging?

Why is ultrasound used so much in the body for medical imaging?

How dangerous is medical ultrasound imaging?

How can ultrasound be used to find flaws in objects?

What do scientists measure when sending ultrasound pulses?

What is a boundary?

What does the partial reflection property mean?

What happens to ultrasound waves at boundaries?

At a boundary, what happens to the ultrasound waves that are not reflected?

A pulse of ultrasound is partially reflected by an object. What has happened?

What can the time taken for ultrasound waves to reflect be used for?

If there is reflection of ultrasound, what has happened to a pipe?

What is transmission?

Give an example of a medium.

What is echo sounding?

What type of waves do echos use?

What can echo sounding also be used to find?

What do echo sounding, medical imaging and industrial imaging all rely on?

If a ship receives echoes a long time after the ultrasound is sent, how deep is the water?

If a ship receives echoes almost instantly after the ultrasound is sent, how deep is the water?

A pulse of ultrasound takes 4.5 s to travel from a submarine to the sea bed and back again. How far away is the seabed? (Speed of sound in water 1520 m/s)

A pulse of ultrasound takes 9 s to travel from a submarine to the sea bed and back again. How far away is the seabed? (Speed of sound in water 1520 m/s)

A pulse of ultrasound takes 0.5 s to travel from a submarine to the sea bed and back again. How far away is the seabed? (Speed of sound in water 1520 m/s)