Question

what evidence is there that the universe is expanding?
new matter has been created as a result of other universal matter expanding outward.
the results of the big bang reveal an equal distribution of cosmic background radiation.
the doppler effect shows that light waves traveling through space shorten as the universe expands.
the universe is not expanding

choose which answer is false when talking about the sun. *
average absolute magnitude.
middle aged star.
is part of the constellation ra \the sun god\
shines with a yellow light.

Explanation:

First Question (Evidence for Universe Expansion)

• Option 1: Matter creation isn't evidence for expansion. The universe's expansion doesn't create new matter in this way.
• Option 2: Cosmic background radiation (CBR) from the Big Bang is uniformly distributed, supporting the Big Bang theory and the idea of a once - compact universe that expanded. This is valid evidence.
• Option 3: The Doppler effect for light from distant galaxies shows redshift (wavelengths stretch, not shorten) as galaxies move away, indicating expansion. So this option's description is wrong.
• Option 4: Scientific consensus is that the universe is expanding, so this is incorrect.

• Option 1: The Sun has a defined absolute magnitude (not an average in the sense of being false here; maybe a mis - phrasing, but let's check others).
• Option 2: The Sun is a middle - aged star (main - sequence star, about halfway through its life), this is true.
• Option 3: The Sun is not part of any constellation. Constellations are patterns of stars as seen from Earth, and the Sun is not part of such a pattern. So this statement is false.
• Option 4: The Sun emits yellow light, this is true.

Answer:

B. The results of the Big Bang reveal an equal distribution of cosmic background radiation.

Second Question (False Statement about the Sun)