Stars and the Origin of the Universe — Test

Question 10 • Physics in the Universe

What does this data reveal about the relationship between redshift and the scale of the universe?

Answer

Hubble's Law suggests all galaxies in the universe remain at fixed distances from one another.

Galaxies with higher redshift move away faster, supporting the idea that the universe is expanding.

The galaxies with lower redshift are the farthest, meaning the universe is contracting.

The velocity of galaxies is random, showing no apparent relationship to their distance.

Explanation

Redshift indicates how quickly a galaxy is receding: a greater redshift corresponds to a greater recession speed. Hubble’s Law links that speed to distance, so the pattern supports an expanding universe. Choice B states this relationship; the other choices incorrectly suggest fixed distances, contraction, or no relationship.

AI-written and checked against the verified answer.

More from this Course

Test

Test

Test