Test 3 Extra

Question 1

Astronomers now believe that the dominant factor in the evolution of galaxies is:

Answer 1

Galaxy collisions.

Question 2

Fundamental corroborating evidence that the big bang really occurred is:

Answer 2

The cosmic background radiation.

Question 3

The flatness problem of the universe is:

Answer 3

That studies of Hubble’s Law seem to indicate that the universe is just on the boundary between an open and closed universe.

Question 4

The horizon problem (also called the isotropy problem) of the universe is:

Answer 4

The temperature of the most distant material that we can see in space is just about the same value, as indicated by measurements of the microwave background radiation.

Question 5

The inflation theory solves which problems of standard cosmology?

Answer 5

Both the flatness and horizon problems.

Question 6

Assume that the universe is open and two lasers are placed parallel to each other. As the laser beams travel the space between the beams will:

Answer 6

Get larger.