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Questions and Answers
Which of the following statements about ultrasound is true?
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?
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?
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?
What is the similarity between the ultrasound used by dolphins and bats, and the radar we have today?
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What is the purpose of using special microphones to record ultrasound?
What is the purpose of using special microphones to record ultrasound?
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