Pale Blue Dot: A Vision of the Human Future in Space Test | Mid-Book Test - Medium

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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. What form do the materials that planets emerge from take before they coalesce into proto-planets?
(a) A star.
(b) A disc.
(c) A sphere.
(d) A cloud.

2. According to Sagan, which of the following was the most notable historical tool that humans used to explore the world?
(a) Ships.
(b) Roads.
(c) The Wheel.
(d) Compasses.

3. Uranus has an unusual field around it of what type?
(a) Photons.
(b) Radiation.
(c) Gamma rays.
(d) Magnetism.

4. How does Sagan describe his reaction to the difficulties in detecting human life and intelligence on Earth from space?
(a) Aggravating.
(b) Disappointing.
(c) Sobering.
(d) Unsurprising.

5. In what century was the geocentric theory conclusively disproved?
(a) The 11th century.
(b) The 13th century.
(c) The 19th century.
(d) The 21st century.

Short Answer Questions

1. In what way is Titan's cold atmosphere an advantage for the formation of life?

2. In Chapter 5 Sagan asks the reader to imagine that they are which of the following?

3. What concept does Sagan suggest that the image of the "pale blue dot" mocks?

4. What visual resolution would be required to determine that humans are related to the intelligence on Earth?

5. Which of the following does Sagan NOT cite as evidence for the age of the universe?

Short Essay Questions

1. What are the distinguishing characteristics of the moon Titan?

2. What aspects of science make it unappealing to some?

3. Why does Sagan believe that the image of the "pale blue dot" undermined the "imagined self-importance" of humanity?

4. Why does Saga say he is optimistic about the "human prospect"?

5. What may have happened to other planets from the early solar system?

6. How are the Voyager spacecraft able to travel quickly to distant planets?

7. Briefly describe the progress made to undermine the geocentric theory.

8. What questions does Sagan say he intends to address in this book?

9. What problems does NASA face in pursuing its missions?

10. What was Sagan's involvement in the passage of Mars by the Viking probe?

(see the answer keys)

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