18 Questions
What is the SI unit of intensity of sound?
Watt per square meter (W/m²)
Which of the following statements about sound waves is correct?
Sound waves are longitudinal waves consisting of compressions and rarefactions.
Which property of sound determines its pitch?
Frequency
What is the term used to describe the quality of a sound that distinguishes it from others of the same pitch and loudness?
Timbre
What is the unit used to measure the intensity level of sound?
Decibel (dB)
Which of the following statements about echo is correct?
Echo is caused by the reflection of sound waves from a surface.
Which of the following factors does NOT affect the loudness of a sound?
The frequency of the sound wave
What happens to the wavelength of a sound wave when its frequency increases?
The wavelength decreases
What is the unit used to measure the intensity level of sound?
Decibel (dB)
Which of the following properties of sound waves does NOT demonstrate their wave nature?
Polarization
What is the relationship between the frequency and pitch of a sound?
Frequency and pitch are directly proportional
Which of the following statements about the intensity of sound is correct?
Intensity is a measure of the energy carried by a sound wave per unit time
What does the wavelength of a sound wave represent?
The distance between two consecutive compressions or rarefactions
How does the area of the vibrating body affect the loudness of a sound?
The loudness increases as the area increases
Which factor primarily determines the loudness of a sound?
The amplitude of the vibrating body
What are compressions in a sound wave?
Regions where air pressure is higher than the surrounding air pressure
What are rarefactions in a sound wave?
Regions where air pressure is lower than the surrounding air pressure
Which characteristic of a sound wave is NOT mentioned in the text?
Pitch
Test your knowledge on the characteristics of sound waves, including concepts like loudness and wavelength. Learn to distinguish between different sounds based on their attributes.
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