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Questions and Answers
Which of the following is true about sound waves in air at atmospheric pressure?
Which of the following is true about sound waves in air at atmospheric pressure?
- They have frequencies ranging from 20 Hz to 20 kHz
- They are audible to humans
- They have wavelengths ranging from 17 meters to 1.7 centimeters (correct)
- They are known as ultrasound
What is the frequency range within which audio waves elicit an auditory percept in humans?
What is the frequency range within which audio waves elicit an auditory percept in humans?
- Below 20 Hz
- Above 20 kHz
- 17 meters to 1.7 centimeters
- 20 Hz to 20 kHz (correct)
What is the term for sound waves above 20 kHz that are not audible to humans?
What is the term for sound waves above 20 kHz that are not audible to humans?
- Mechanical waves
- Acoustic waves
- Infrasound
- Ultrasound (correct)
Which field of science deals with the study of mechanical waves in gasses, liquids, and solids, including sound and ultrasound?
Which field of science deals with the study of mechanical waves in gasses, liquids, and solids, including sound and ultrasound?
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What is the term for sound waves below 20 Hz?
What is the term for sound waves below 20 Hz?
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