Sound

Sound

Chapter 5 Revision-2

Multiple Choice

You are in a car traveling at 24.6 m/s. A second car is moving toward you at the same speed. Its horn emits a sound wave of 475 Hz. What frequency do you hear? Use 343 m/s as the speed of sound.

• 80 Hz

• 150 Hz

• 250 Hz

• 548 Hz

Multiple Choice

Which of the following is an example of an open-pipe resonator?

• Drums

• Flute

• Guitar

• Piano

Multiple Choice

The diagrams above represent four different standing wave patterns in air columns of equal length. Which of the columns will produce the note having the highest pitch?

• A

• B

• C

• D

Multiple Choice

A car is moving away from a stationary siren which emits a sound frequency of 657 Hz. If the car is moving at 20 m/s and the speed of sound in the air is 343 m/s, what is the frequency of the sound heard by the driver?

• 543 Hz

• 619 Hz

• 647 Hz

• 698 Hz

Multiple Choice

In order for two sound waves to produce audible beats, it is essential that the two waves have _____

• the same amplitude

• the same frequencies

• the same number of overtones

• slightly different frequencies

Multiple Choice

Calculate the wavelength of a soundwave of frequency 600 Hz traveling at 340 m/s.

• 0.56 m

• 1.29 m

• 450 m

• 149600 m

Multiple Choice

For a musical instrument, the lowest frequency of sound that resonates is called the _____________.

• fundamental

• harmonic

• overtone

• resonance

Multiple Choice

Which one of the following factors determines the pitch of a sound?

• Amplitude

• Distance of sound wave from the source

• Frequency

• Speed of the sound wave

Multiple Choice

A person is at a concert moves away from the music speaker. The frequency observed by that person ________.

• becomes zero

• decreases

• increases

• stays the same

Multiple Choice

The speed of sound in air depends on the __________ of the air.

• amplitude

• frequency

• temperature

• wavelength

Multiple Choice

The loudness (or intensity) of a sound wave is related to the ___________.

• amplitude

• frequency

• temperature

• wavelength

Multiple Choice

The speed of sound, like all waves, depends on the _________ through which it travels.

• conductor

• medium

• object

• vacuum

Multiple Choice

Which of the following best describes the distance from any point on a wave to the corresponding point on the next wave?

• Amplitude

• Frequency

• Wavelength

• Wave Height

Multiple Choice

What type of wave is a sound wave?

• Electromagnetic Wave

• Longitudinal Wave

• Transverse Wave

• Ultraviolet Wave