Big Bang Theory & Redshift

Front

What does BLUE shift of light indicate about a star's movement?

Back

The star is moving toward Earth.

Front

What is the implication of RED shift of light?

Back

The star is moving away from Earth.

Front

What does a BLUE shifted light have in terms of wavelength?

Back

Shorter wavelength.

Front

What does a RED shifted light indicate about the movement of galaxies?

Back

Galaxies that are redshifted are moving away from us.

Front

What is the general observation about galaxies in the universe?

Back

The galaxies are moving away from us.

Front

What is the significance of redshift in astronomy?

Back

It provides evidence for the expansion of the universe.

Front

What does the term 'wavelength' refer to in the context of light?

Back

The distance between successive peaks of a wave.

Front

How does the Doppler effect relate to light from stars?

Back

It explains how the frequency of light changes based on the relative motion of the source and observer.

Front

What is the relationship between redshift and distance in the universe?

Back

Generally, the greater the redshift, the farther away the galaxy is.

Front

What does a longer wavelength in light indicate about its source's movement?

Back

The source is moving away from the observer.