Question

what is ultrasound used for?
(5 mark question)

Answer 1

Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasound imaging or sonography is often used in medicine

Answer 2

1 ) communication between ships and sea .
2) join plastic surfaces together
3) locate the cracks and faults in metal blocks
4) sonography technology
5) obtain images of organs