Doppler Effect Warm-Up

Front

What is the Doppler Effect?

Back

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

Front

How does the frequency of sound change as the source approaches an observer?

Back

The frequency of the sound increases as the source approaches.

Front

What happens to the frequency of sound when the source moves away from the observer?

Back

The frequency of the sound decreases as the source moves away.

Front

What happens to the wavelength of sound waves when the source is moving away from the observer?

Back

The wavelength increases.

Front

What is a real-life example of the Doppler Effect?

Back

The change in pitch of a siren as an ambulance passes by.

Front

What is the relationship between frequency and wavelength in sound waves?

Back

As frequency increases, wavelength decreases, and vice versa.

Front

What is the effect of a moving sound source on the observed pitch?

Back

The observed pitch increases as the source approaches and decreases as it moves away.

Front

What is the formula for the Doppler Effect in sound?

Back

f' = f (v + vo) / (v - vs), where f' is the observed frequency, f is the source frequency, v is the speed of sound, vo is the speed of the observer, and vs is the speed of the source.

Front

What happens to sound waves when they are absorbed by a medium?

Back

The sound waves lose energy and may become quieter or inaudible.

Front

What is the difference between the Doppler Effect and the reflection of sound waves?

Back

The Doppler Effect involves a change in frequency due to relative motion, while reflection involves sound bouncing off surfaces.