Front

What is Red Shift?

Back

Red Shift is the phenomenon where light from an object moving away from an observer is shifted to longer wavelengths, making it appear redder.

Front

What does the term 'Doppler Effect' refer to?

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

What color shift indicates that a galaxy is moving away from us?

Back

Red shift indicates that a galaxy is moving away from us.

Front

What is the significance of observing red shift in galaxies?

Back

Observing red shift helps astronomers determine that the universe is expanding.

Front

Where is the best location for a telescope to observe deep space?

Back

In space, as it avoids atmospheric interference.

Front

What type of wave has the highest frequency?

Back

Gamma rays have the highest frequency among electromagnetic waves.

Front

What happens to the light from a star that is moving away from Earth?

Back

The light is redshifted, meaning its wavelength increases and it appears redder.

Front

What is the relationship between frequency and wavelength in waves?

Back

Frequency and wavelength are inversely related; as frequency increases, wavelength decreases.

Front

What is the effect of a galaxy moving towards us on its light?

Back

The light is blueshifted, meaning its wavelength decreases and it appears bluer.

Front

How does red shift provide evidence for the Big Bang theory?

Back

Red shift of distant galaxies supports the idea that the universe is expanding from a hot, dense state.