Ultrasonic Sensors
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Questions and Answers

Which of the following statements about ultrasound is true?

  • Ultrasound cannot be detected by dolphins and bats
  • Ultrasound is audible to humans
  • Ultrasound can be used to clean objects (correct)
  • Ultrasound is a low frequency sound

    • What is the purpose of emitting ultrasonic sound for dolphins and bats?

  • To navigate and detect objects (correct)
  • To communicate with each other
  • To scare away predators
  • To locate their prey

    • What can be inferred about the waveform of ultrasound?

  • The waveform of ultrasound has a low frequency
  • The waveform of ultrasound is similar to that of radio waves
  • The waveform of ultrasound has valleys and peaks close together (correct)
  • The waveform of ultrasound has wide valleys and peaks

    • What is the similarity between the ultrasound used by dolphins and bats, and the radar we have today?

    <p>Both use the same principle of detecting objects using sound waves</p> Signup and view all the answers

    What is the purpose of using special microphones to record ultrasound?

    <p>To convert the ultrasound into visible vibrations</p> Signup and view all the answers

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