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

2. At the time this book was written, how many planets were known to exist around other stars?
(a) About fifty.
(b) None.
(c) About twenty.
(d) Ten.

3. In what century was the geocentric theory conclusively disproved?
(a) The 11th century.
(b) The 19th century.
(c) The 13th century.
(d) The 21st century.

4. What planet represents the farthest distance from Earth that the Voyager craft were intended to function at?
(a) Mars.
(b) Uranus.
(c) Saturn
(d) Jupiter.

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

Short Answer Questions

1. In the analogy Sagan makes in Chapter 5 the reader is asked to imagine they are seeing Earth from what perspective?

2. Sagan suggests that throughout history, many have claimed that our species is what?

3. What is the most important thing that would immediately be apparent to any alien intelligence that found the Voyager probes?

4. CFCs are chemicals that is primarily hazardous to the environment in what area?

5. How fast was Voyager I moving in 1990?

(see the answer key)

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