Sound Waves Instruction and Practice #2 Review

Front

What is the relationship between amplitude and loudness in sound waves?

Back

Higher amplitude means higher loudness.

Front

What happens to the frequency of a sound wave as the source moves away from an observer?

Back

The frequency decreases.

Front

What frequency is heard by a man as an ambulance with a siren emitting 450 Hz moves toward him?

Back

More than 450 Hz.

Front

What happens to the wavelength of a sound wave as the frequency increases?

Back

The wavelength decreases.

Front

As the source of sound moves west, which person hears the highest pitch?

Back

Person A.

Front

Define sound wave.

Back

A sound wave is a longitudinal wave that is created by vibrating objects and travels through a medium (like air, water, or solids).

Front

What is frequency in the context of sound waves?

Back

Frequency is the number of cycles of a wave that pass a point in one second, measured in Hertz (Hz).

Front

What is the formula for the speed of sound?

Back

Speed of sound = frequency × wavelength.

Front

How does the Doppler effect relate to sound waves?

Back

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What is the unit of measurement for sound intensity?

Back

Decibel (dB).