Doppler Effect

Front

What is the Doppler Effect?

Back

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

Front

What happens to the frequency of sound as the source moves towards an observer?

Back

The frequency increases, resulting in a higher pitch sound.

Front

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

Back

The frequency decreases, resulting in a lower pitch sound.

Front

What does a blue shift in light indicate about a star's movement?

Back

It indicates that the star is moving towards the observer.

Front

What does a red shift in light indicate about a star's movement?

Back

It indicates that the star is moving away from the observer.

Front

Can the Doppler Effect occur with light waves?

Back

Yes, the Doppler Effect can occur with light waves, causing shifts in color.

Front

What is the relationship between wave frequency and pitch?

Back

Higher frequency waves produce higher pitch sounds, while lower frequency waves produce lower pitch sounds.

Front

What is an example of the Doppler Effect in everyday life?

Back

An example is the change in pitch of a passing siren from an ambulance.

Front

How does the speed of sound in air affect the Doppler Effect?

Back

The speed of sound in air affects how quickly the frequency changes are perceived by the observer.

Front

What is the formula for calculating the observed frequency in the Doppler Effect?

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.