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. At the time of the writing of this book, what is the farthest planet that humans had reached through the use of exploratory probes?
(a) Uranus.
(b) Neptune.
(c) Saturn.
(d) Pluto.

2. What did Galileo demonstrate?
(a) The Earth is not the only planet.
(b) The Sun is just a star.
(c) The stars are fixed.
(d) The moon does not orbit the Earth.

3. Conditions of what type were extremely important in the creation of early life on Earth?
(a) Atmospheric.
(b) Geological.
(c) Aquatic.
(d) Littoral.

4. Which planet was Voyager 2 intended to visit first?
(a) Mercury.
(b) Jupiter.
(c) Mars.
(d) Venus.

5. What major change have humans made to the environment that would be easily detectable from space?
(a) The pollution of rivers and lakes.
(b) The Three-Gorges dam.
(c) The destruction of the rainforests.
(d) Desertification.

Short Answer Questions

1. According to Sagan, how do early Earth and Titan compare?

2. What does Neptune posses at its core that Uranus apparently lacks?

3. Titan orbits what planet?

4. About how long does Sagan suggest that human beings have been "settled down"?

5. What abstract concept does Sagan specifically say he is optimistic about?

Short Essay Questions

1. What does Sagan think about the failure of the Voyager probes to find life in the solar system?

2. As of 1990, what had the Voyager spacecraft achieved?

3. What are the distinguishing characteristics of the planet Uranus?

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

5. When this book was written, what was known about planets in other solar systems?

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

7. What does the image of the "pale blue dot" suggest to Sagan?

8. Why is it difficult to detect intelligent life on Earth?

9. What "malevolent" theology does Sagan describe in Chapter 3, "The Great Demotions"?

10. What does the Strong Anthropomorphic principle suggest?

(see the answer keys)

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