1 (a) What is ultrasound?

(1 mark)

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1 (b) Ultrasound can be used to measure the depth of water below a ship.

A pulse of ultrasound is sent out from an electronic system on-board the ship.

It takes 0.80 seconds for the emitted ultrasound to be received back at the ship.

Calculate the depth of the water.

Speed of ultrasound in water = 1600 m/s

Depth of water = ………………………………………. metres
(3 marks)

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1 (c) Ultrasound can be used in medicine for scanning.

State one medical use of ultrasound scanning.

(1 mark)

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1 (d) Images of the inside of the human body can be made using a Computerised Tomography (CT) scanner. The CT scanner uses X-rays to produce these images.

State one advantage and one disadvantage of using a CT scanner, compared with ultrasound scanning, for forming images of the inside of the human body.

Advantage of CT scanning:

Disadvantage of CT scanning:

(2 marks)

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From Q1 P3 AQA June 2014 (Higher)