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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. As of 1990, how many planets did the Voyager craft explore?
(a) Five.
(b) Four.
(c) Three.
(d) Two.

3. What is notable about the stars in Sagan's distant picture of the Earth?
(a) An immense number are visible.
(b) They appear very close.
(c) They have many different colors.
(d) Very few are visible.

4. Which of the following is one of the "great demotions" that Sagan cites?
(a) There are planets orbiting other stars.
(b) Light and magnetism are the same thing.
(c) The Earth is 6 billion years old.
(d) There may have been life on Mars.

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

Short Answer Questions

1. Sagan describes humans as which of the following, with respect to their arrival in the universe?

2. What other medium was used to express the desire to wander, according to Sagan, as human civilization developed?

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

4. What was the state of the knowledge and belief about life on other planets at the time the book was written?

5. One feature that Sagan suggests would be easier to detect that human intelligence would be flatulence from what kind of animal?

(see the answer key)

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