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. The Voyager probes found large amounts of what element on Titan?
(a) Oxygen.
(b) Iridium.
(c) Helium.
(d) Nitrogen.

2. What space probe was an important part of Sagan's career, and passed by a major planet in 1976?
(a) Newton.
(b) Ion.
(c) Tesla.
(d) Viking.

3. In Chapter 5 Sagan asks the reader to imagine that they are which of the following?
(a) An ancient person.
(b) An alien.
(c) An ant.
(d) A time traveler.

4. William Herschel, the discoverer of Uranus, had what unusual profession?
(a) Musician.
(b) Poet.
(c) Actor.
(d) Magician.

5. What is notable about the Sun's light in Sagan's distant picture of the Earth?
(a) It creates a halo around the Earth.
(b) It is extremely dim.
(c) It appears to bathe the Earth in light.
(d) It appears as many distinct shafts of light.

Short Answer Questions

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

2. According to Sagan, when viewed from space, how apparent would the existence of life on Earth be?

3. Which of the following is a major point opponents of space exploration raise?

4. What unusual source of energy do the Voyager spacecraft take advantage of?

5. What does Sagan claim is the key element of humanity's future?

Short Essay Questions

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

2. What advantage make it more likely that the Voyager records will eventually be found?

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

4. What are the "great demotions" that Sagan refers to?

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

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

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

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

9. How did ancient people know about the planets?

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

(see the answer keys)

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