Origin and Evolution of the Universe

Question 1

Which statements describe some of the original ideas proposed about the universe during the big bang? Check all that apply.

Revolt · Accepted Answer

The universe was opaque.; The universe was very hot and dense.; The universe expanded from a single point.

Question 2

1234✔ 5

Revolt · Accepted Answer

5

Question 3

12✔ 345

Revolt · Accepted Answer

3

Question 4

1✔ 2345

Revolt · Accepted Answer

2

Question 5

Question 6

Revolt · Accepted Answer

107562

Question 6

When a high-mass main sequence star runs out of both hydrogen and helium in its core, the core begins to fuse . When nuclear fusion ends in a high-mass star, the heavy elements formed in the star’s core are released through a .

Revolt · Accepted Answer

Part 1: carbon; Part 2: supernova

Question 7

Which were predictions based on the big bang theory? Select all that apply.

Revolt · Accepted Answer

leftover radiation exists from the big bang; hydrogen and helium exist in abundance; the universe is still expanding

Question 8

Order the events to show the evolution of the universe after the big bang. Inflation: Nucleosynthesis: Formation of first stars: Formation of subatomic particles: Separation of last two fundamental forces:

Revolt · Accepted Answer

Selection 2: 4; Selection 3: 5; Selection 4: 3; Selection 5: 2

Question 9

Arcturus is a star whose surface temperature is 4290 K. What is most likely the color of Arcturus? What is most likely the mass of Arcturus? about solar masses

Revolt · Accepted Answer

Part 1: orange; Part 2: 0.8

Question 10

A star is observed to have a temperature of 3000 K and a luminosity of 105. What is the color of the star? What group does the star belong to?

Revolt · Accepted Answer

Part 1: red; Part 2: supergiants

Origin and Evolution of the Universe Answers

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