Smuggler's Run: Doppler Effect

Front

What is the definition of frequency in the context of light spectra?

Back

Frequency refers to the number of waves that pass a point in one second.

Front

What can astronomers learn from observing red shifts in galaxies?

Back

Astronomers can learn that the galaxies are moving away from us.

Front

What happens to the pitch of a sound as the source moves away from the observer?

Back

The pitch decreases.

Front

What does the Doppler effect explain about the light of approaching and receding stars?

Back

The light changes color.

Front

Which color has the longest wavelength in the visible spectrum?

Back

Red has the longest wavelength.

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 moving relative to the wave source.

Front

How does the Doppler Effect apply to sound waves?

Back

As a sound source moves towards an observer, the sound waves compress, leading to a higher pitch; as it moves away, the waves stretch, resulting in a lower pitch.

Front

What is redshift?

Back

Redshift is the phenomenon where light from an object moving away from an observer is shifted to longer wavelengths, appearing redder.

Front

What is blueshift?

Back

Blueshift is the phenomenon where light from an object moving towards an observer is shifted to shorter wavelengths, appearing bluer.

Front

How does the speed of light relate to the Doppler Effect?

Back

The speed of light is constant, and the Doppler Effect describes how the observed frequency of light changes based on the relative motion of the source and observer.