Sound Waves Quiz

What are the regions of higher and lower density in a sound wave called?

• Oscillations and vibrations

• Compressions and rarefactions

• Waves and troughs

• Peaks and valleys

What type of sound wave is produced when a loudspeaker cone vibrates back and forth in a fluid?

• Transverse sound wave

• Shear sound wave

• Longitudinal sound wave

• Circular sound wave

What is the speed of sound in air at 20°C?

• 331 m/s

• 343 m/s

• 970 m/s

• 1480 m/s

What is the frequency range of sound waves that humans can typically hear?

• 0 to 10 kHz

• 20 to 20,000 Hz

• 100 to 10,000 Hz

• 1 to 100 kHz

What is the speed of sound in aluminum according to Table 20.1?

• 343 m/s

• 1480 m/s

• 6420 m/s

• 331 m/s

What is the wavelength of a 20 Hz sound wave at room temperature (20°C)?

• 17 m

• 0.69 m

• 1.7 cm

• 343 m

What is the speed of light in a vacuum?

• 299,792,458 m/s

• 343 m/s

• 3,000,000 m/s

• 1,000,000 m/s

What type of wave is a light wave?

• Electromagnetic wave

• Sound wave

• Mechanical wave

• Water wave

What is the appropriate value of the speed of light to use in most calculations?

• 3.00 x 10^8 m/s

• 3.00 x 10^6 m/s

• 3.00 x 10^7 m/s

• 3.00 x 10^5 m/s

What is the range of wavelengths for visible light in air?

• 100 nm to 300 nm

• 400 nm to 700 nm

• 700 nm to 1000 nm

• 300 nm to 500 nm