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The Universe: Key Concepts & Theories Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. When did the Big Bang theory first originate and with whom?

Question 2 2. What are the main pieces of supporting evidence for the Big Bang theory?

Question 3 3. This is a fundamental principle and assumption of cosmology which says that on a large scale the universe is both homogenous and isotropic:

Question 4 4. How long ago did the Big Bang occur?

Question 5 5. What is a singularity?

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Question 6 6. What is cosmic background radiation?

Question 7 7. Based on the cosmological principle, what can we conclude about the universe?

Question 8 8. 100 billion years from now, what will have happened to current galaxies?

Question 9 9. At what time point in the Universe's history is it theorized that all the forces in nature appear along with particles, neutrons, protons, and electrons?

Question 10 10. When was our sun and Milky Way Galaxy formed?

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Question 11 11. Our universe is approximately how old?

Question 12 12. ____ means that one large region of the universe is approximately the same as any other large region of the universe:

Question 13 13. The most likely form dark energy takes now is likely governed by the:

Question 14 14. Six billion years after the Big Bang, within galaxies, stars are born and die, often in enormous explosions called _____. The explosions of these stars distribute common elements, such as oxygen, carbon, nitrogen, calcium, and iron into space.

Question 15 15. If dark energy increases with time, we can expect:

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Question 16 16. ____ means that the universe looks approximately the same in all directions:

Question 17 17. What do we expect will happen to our universe if the cosmological constant is the form of our dark energy?

Question 18 18. If dark energy reverses direction, we can expect a:

Question 19 19. What does a red-shift prove?

Question 20 20. The principle of ________ tells us that there are no special locations in the universe:

The Universe: Key Concepts & Theories Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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