Sound Waves Quiz

What type of wave are sound waves classified as?

• Transverse waves
• Longitudinal waves
• Surface waves
• Electromagnetic waves

Which of the following is NOT a medium through which sound can propagate?

• Solid
• Liquid
• Gas
• Vacuum

What is the approximate speed of sound in gases?

• 4000 m/s
• 1000 m/s
• 100 m/s to 500 m/s
• 1500 m/s

In the experiment with the bell jar, what happens to the sound of the bell as air is pumped out?

• It increases
• It remains the same
• It decreases
• It becomes a different frequency

What are the regions of high pressure in a sound wave called?

• Rarefactions
• Compressions
• Wavelengths
• Frequencies

What is the frequency range of audible sound?

• 0 Hz to 20 Hz
• 20 Hz to 20,000 Hz
• 20,000 Hz to 40,000 Hz
• 100 Hz to 1,000 Hz

What is the term for sound waves with frequencies below 20 Hz?

• Ultrasound
• Infrasound
• Audible sound
• Mechanical waves

How is the frequency of sound produced by a rotating toothed wheel calculated?

• Number of teeth x speed of sound
• Number of teeth x number of revolutions per second
• Number of teeth / number of revolutions per second
• Number of teeth + number of revolutions per second

What happens to the pressure in a rarefaction?

• It is higher than normal
• It is lower than normal
• It remains constant
• It fluctuates

Which of the following statements is true about sound waves?

• They can travel in a vacuum
• They require a medium to propagate
• They are electromagnetic waves
• They are always audible