Understanding Redshift and the Cosmological Distance Ladder

What is the relationship between the distance of a galaxy and its redshift?

• Redshift decreases with distance.

• There is no relationship between distance and redshift.

• The closer the galaxy, the greater the redshift.

• The further the galaxy, the greater the redshift.

How does redshift help astronomers measure distances?

• By allowing comparison with standard candles.

• By indicating the expansion rate of the universe.

• By showing the age of the universe.

• By providing a direct measurement of distance.

What does the redshift of a galaxy tell us about its age?

• It indicates the galaxy's future trajectory.

• It provides an estimate of when the galaxy formed.

• It tells us the exact age of the galaxy.

• It has no relation to the galaxy's age.

What is the significance of the cosmic microwave background radiation?

• It is used to measure the mass of galaxies.

• It is the oldest light in the universe.

• It is a type of redshift caused by local star motion.

• It is unrelated to the big bang.

What caution is given about interpreting redshift?

• Redshift is a simple concept with no complexities.

• Redshift can be influenced by multiple factors.

• Redshift is only caused by the expansion of the universe.

• Redshift is irrelevant to modern astronomy.