Doppler Effect #1

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 wavelength of light from a star moving away from Earth?

Back

The wavelength increases, resulting in a red shift.

Front

What happens to the wavelength of light from a star moving towards Earth?

Back

The wavelength decreases, resulting in a blue shift.

Front

Who first described the Doppler Effect?

Back

Christian Doppler.

Front

What type of shift indicates that a star is moving away from Earth?

Back

Red shift.

Front

What type of shift indicates that a star is moving towards Earth?

Back

Blue shift.

Front

In astronomy, what does the Doppler Effect help determine about celestial objects?

Back

It helps determine their distance from Earth.

Front

Can sound waves exhibit the Doppler Effect?

Back

Yes, sound waves can exhibit the Doppler Effect.

Front

Can light waves exhibit the Doppler Effect?

Back

Yes, light waves can exhibit the Doppler Effect.

Front

What is red shift?

Back

Red shift is the phenomenon where light from an object moving away from the observer is shifted towards the red end of the spectrum.