Other questions in this quiz

2. What, other than medical uses, do Ultrasound waves have?

  • Detecting fish in the sea.
  • Detecting metal under the sand (metal detectors).
  • Detecting oil on the sea bed.
  • Cleaning glass.

3. Why are Ultrasound waves not useful for examining lungs?

  • Because the lungs are constantly contracting due to the patient breathing.
  • Because the Ultrasound waves are not strong enough to produce an image of the lungs.
  • Because they do not travel in air.
  • Because the lungs are surrounded by the ribs which reflects the Ultrasound waves.

4. Why do Ultrasound scans reacquire gel?

  • To attract the ultrasound waves back to the transducer to create an image on the screen.
  • To ensure that the ultrasound waves can tell the difference between the air and the patient.
  • To ensure that there is no air between the ultrasound transducer and the patients skin.
  • To ensure that the ultrasound transducer glides smoothly over the patients skin.

5. What frequency range of sound waves can the human ear hear?

  • 10Hz to 10 000Hz
  • 20Hz to 20 000Hz
  • 50Hz to 50 000Hz
  • 5Hz to 5 000Hz


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