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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 17, Routine Interplanetary Violence, Chapter 18, The Marsh of Camarina.

Multiple Choice Questions

1. According to Sagan, when viewed from space, how apparent would the existence of life on Earth be?
(a) Obvious.
(b) Difficult to discern.
(c) Impossible to discern.
(d) Ambiguous.

2. At the time this book was written, how many Mars Observers had been flown successfully?
(a) Five.
(b) Three.
(c) None.
(d) One.

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

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

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

Short Answer Questions

1. Who helped Sagan calculate that Titan should be host to oceans?

2. What does Sagan lament about the study of Titan?

3. Where does Sagan think that life will most likely be eventually found?

4. What happens to the number of asteroids and comets in the solar system as time goes on?

5. What hazard from nuclear weapons causes "nuclear winter"?

(see the answer key)

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