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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, Is There Intelligent Life on Earth?, Chapter 6, The Triumph of Voyager.

Multiple Choice Questions

1. What strange motion do all of the stars in the sky exhibit?
(a) They tend to move towards each other.
(b) They move in identical tiny ellipses.
(c) They change directions randomly.
(d) They appear to drift towards the Earth.

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

3. What planet did Sagan spend a great deal of time studying when an important space probe passed near it in 1976?
(a) Venus.
(b) Saturn.
(c) Mercury.
(d) Mars.

4. How does Sagan say that science relates to the existence of a divine being?
(a) Science allows for divine beings and miraculous events.
(b) Science does not require such a being.
(c) Science disproves that divine beings can interact with the universe.
(d) Science explicitly denies such a being can exist.

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

Short Answer Questions

1. What space probe was an important part of Sagan's career, and passed by a major planet in 1976?

2. Sagan suggests that the image of the "pale blue dot" teaches the need for what?

3. What role does Sagan suggest that religion has played in the development of science?

4. Sagan expects both Voyager spacecrafts to continue to broadcast data through what year?

5. Which of the following is NOT one of the ways that Sagan says life seems to be?

(see the answer key)

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