Doppler Effect #1

Front

What is the Doppler Effect?

Back

A change in the frequency of sound, light, or other waves that causes a change in pitch.

Front

What is Redshift?

Back

Objects moving away from us give off red light.

Front

What is Blueshift?

Back

Objects moving towards us give off blue light.

Front

Who first described the Doppler Effect?

Back

Christian Doppler.

Front

What happens to the wavelength when the frequency is higher?

Back

The wavelength gets shorter.

Front

What is the relationship between frequency and pitch?

Back

Higher frequency results in a higher pitch.

Front

What type of waves does the Doppler Effect apply to?

Back

Sound waves, light waves, and other types of waves.

Front

How does the Doppler Effect relate to sound from a moving vehicle?

Back

As a vehicle approaches, the sound frequency increases (higher pitch); as it moves away, the frequency decreases (lower pitch).

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.

Front

What is the significance of the Doppler Effect in astronomy?

Back

It helps determine the movement of stars and galaxies, indicating whether they are moving towards or away from Earth.