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

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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

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

2. Which of the following is a major point opponents of space exploration raise?
(a) There is nothing of value anywhere else in the solar system.
(b) No good has ever come of space exploration.
(c) Space exploration exists for national prestige only.
(d) The problems on Earth should be solved first.

3. What unusual source of energy do the Voyager spacecraft take advantage of?
(a) Planetary gravity.
(b) Vacuum energy.
(c) Cosmic rays.
(d) Solar wind.

4. What role does Sagan suggest that religion has played in the development of science?
(a) Religiously-minded individuals often become scientists.
(b) Religion has aided science in significant ways.
(c) Science progressed in spite of religion.
(d) Religion informs and guides scientific development.

5. Which of the following is NOT one of the major unknowns that Sagan says he will address in this book?
(a) Why humans should explore space.
(b) Whether or not there is intelligent life on nearby planets.
(c) How humans can explore space.
(d) What humanity's future is.

6. One feature that Sagan suggests would be easier to detect that human intelligence would be flatulence from what kind of animal?
(a) Cows.
(b) Sheep.
(c) Plankton.
(d) Krill.

7. As of the writing of this book, how many moons was Uranus known to have?
(a) Five.
(b) Twelve.
(c) Seven.
(d) Ten.

8. Who was the first to discover moons around another planet?
(a) Brahe.
(b) Copernicus.
(c) Kepler.
(d) Galileo.

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

10. Sagan helped to discover that Saturn provides what critical element to Titan?
(a) Tidal forces.
(b) Hydrogen.
(c) A magnetosphere.
(d) Energy.

11. What was Neptune's position in the solar system as of the writing of this book?
(a) It was third to last.
(b) It was the last known planet.
(c) It's position was uncertain.
(d) It was last.

12. Sagan suggests that the image of the "pale blue dot" teaches the need for what?
(a) Peace.
(b) Space exploration.
(c) Science education.
(d) Kindness.

13. What criticism does Sagan make of NASA in Chapter 6, "The Triumph of Voyager"?
(a) It is unconcerned with human safety in spaceflight.
(b) It is essentially incompetent.
(c) It cannot correct its mistakes.
(d) It has made many engineering mistakes.

14. Sagan expects both Voyager spacecrafts to continue to broadcast data through what year?
(a) 2015.
(b) 2050.
(c) 2030.
(d) 2010.

15. Which of the following is NOT one of the ways that Sagan says life seems to be?
(a) Insignificant.
(b) Absurd.
(c) Intentional.
(d) Meaningless.

Short Answer Questions

1. What planet represents the farthest distance from Earth that the Voyager craft were intended to function at?

2. Titan orbits what planet?

3. Uranus has an unusual field around it of what type?

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

5. What means does Sagan suggest that humans use to represent and express their desire to wander?

(see the answer keys)

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