Module 14 Sound Review

Which of the following best explains how sound waves propagate through air?

• A) Sound waves travel as a series of electromagnetic waves.

• B) Sound waves are transmitted through the vibration and collision of air particles.

• C) Sound waves require a vacuum to travel effectively.

• D) Sound waves are a form of matter that moves through space.

What is the primary factor that determines the pitch of a sound?

• The amplitude of the sound wave

• The frequency of the sound wave

• The speed of sound in air

• The wavelength of the sound wave

How does temperature affect the speed of sound in air?

• Sound travels faster in colder air.

• Sound travels slower in warmer air.

• The speed of sound is independent of temperature.

• Sound travels faster in warmer air.

Which statement accurately describes the relationship between amplitude and loudness?

• Loudness is independent of amplitude.

• Higher amplitude results in lower loudness.

• Loudness is directly proportional to the amplitude of the sound wave.

• Loudness is measured in Hertz.

What occurs during the Doppler effect when a sound source approaches a stationary observer?

• The frequency of the sound decreases.

• The frequency of the sound remains constant.

• The frequency of the sound increases.

• The sound wave is absorbed by the observer.

Which part of the human ear is responsible for converting sound vibrations into electrical impulses?

• The auditory canal

• The tympanic membrane

• The cochlea

• The auditory nerve

Why can sound not travel in a vacuum?

• There are no particles to transmit the sound waves.

• Sound waves require a specific temperature to travel.

• Sound waves can travel in a vacuum.

• Sound waves are too weak to travel in a vacuum.

What is the significance of the logarithmic scale used to measure sound levels?

• It simplifies the calculation of sound frequencies.

• It allows for easier comparison of sound intensities over a wide range.

• It eliminates the need for measuring amplitude.

• It is only applicable to musical sounds.

In the context of sound perception, what does the term "sound level" refer to?

• The frequency of the sound wave.

• The physical distance from the sound source.

• The intensity of sound as perceived by the human ear.

• The speed of sound in different mediums.

Which of the following scenarios best illustrates the Doppler effect?

• A) A person listening to a song on the radio.

• B) An ambulance siren that appears to change pitch as it moves past an observer.

• C) A sound echoing off a wall.

• D) A whisper in a quiet room.