2
QuizMultiple Choice

The Nature of the Universe — Test

Question 2 • Earth and Space Science

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

Answer
A
The velocity of galaxies is random, showing no apparent relationship to their distance.
B
Hubble's Law suggests all galaxies in the universe remain at fixed distances from one another.
C
The galaxies with lower redshift are the farthest, meaning the universe is contracting.
D
Galaxies with higher redshift move away faster, supporting the idea that the universe is expanding.

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.

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