U5.6 – Application of Waves

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Application of Waves

1 / 10

What is the technique used in ultrasound scanning?

2 / 10

BBC Radio Sheffield West Midlands broadcasts on 97.4 MHz. Calculate the wavelength of the radio waves.

3 / 10

Which one of the following types of wave can't be polarised?

4 / 10

Complete the sentence: "When waves pass from one medium to another, if the mediums have similar densities then most of the energy is ____________."

5 / 10

Fishermen use sonar to detect the depth of fish beneath the boat. On this occasion, the echo returned after 0.83 s. The speed of sonar waves through water is 1500 m s-1. Calculate the depth of the fish.

6 / 10

Why is gel added to a patient's skin when using ultrasound?

7 / 10

Select the missing word: "For ultrasounds, ________ wavelengths produce clearer images".

8 / 10

What happens when a ultrasound wavelength meets an interface in the body?

9 / 10

Which sentence is true of ultrasound transducers?

10 / 10

Select the missing phrase: "For an object to be resolved in the body, the ultrasound wavelength must be ________ the object."

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