Other questions in this quiz

2. Sound that has a frequency below the range of human hearing (i.e. below 20 Hz) is called...

  • Infrasound
  • Ultrasound

3. _____ waves can be used to work out distances.

  • Ultrasound
  • Infrasound

4. Speed (m/s) = Distance (m) ÷ _____ (s)

  • Time (s)
  • Period (s)
  • Duration (s)

5. Ultrasound is useful in lots of different ways such as...

  • Pre-natal scanning of a foetus and sonar (detecting stuff in the water).
  • Sonar (detecting stuff in the water) and to monitor earthquakes, storms and man made explosions.
  • To monitor earthquakes, storms and man made explosions and pre-natal scanning of a foetus.

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