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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. According to Sagan, how do early Earth and Titan compare?
(a) They are almost exactly the same.
(b) They are totally different.
(c) They are only vaguely related.
(d) They are similar.

2. Sagan suggests that throughout history, many have claimed that our species is what?
(a) Worthless.
(b) Unique.
(c) Essentially good.
(d) Irredeemable.

3. What means does Sagan suggest that humans use to represent and express their desire to wander?
(a) Adventures.
(b) Stories and symbols.
(c) Trade.
(d) Colonization.

4. What visual resolution would be required to determine that humans are related to the intelligence on Earth?
(a) 1 meter.
(b) 10 cm.
(c) 10 meters.
(d) 1 cm.

5. Who helped Sagan calculate that Titan should be host to oceans?
(a) Dermott.
(b) Mach.
(c) Cassini.
(d) Kuiper.

Short Answer Questions

1. What was Neptune's position in the solar system as of the writing of this book?

2. What does Sagan say that philosophy and religion should provide?

3. How much bigger is Neptune than Earth?

4. Where does Neptune fall in the mission plan for the Voyager probes?

5. Titan has what distinction among the moons of the planet it orbits?

Short Essay Questions

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

2. What is the problem of perspective in estimating the importance of human beings?

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

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

5. What does the Strong Anthropomorphic principle suggest?

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

7. What dangers did the Voyager I spacecraft face in taking a distant picture of Earth?

8. What undesirable features of human activity might be easily noticed from space?

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

10. How was Sagan involved in discoveries about Titan?

(see the answer keys)

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