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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 13, The Gift of Apollo, Chapter 14, Exploring Other Worlds and Protecting This One.

Multiple Choice Questions

1. At the time of the writing of this book, what is the farthest planet that humans had reached through the use of exploratory probes?
(a) Uranus.
(b) Pluto.
(c) Neptune.
(d) Saturn.

2. Sagan suggests that the Apollo missions were primarily about what?
(a) Science.
(b) Technology.
(c) Military strategy.
(d) Politics.

3. How old are the terrain features generated by Venus' volcanoes?
(a) 4 billion years.
(b) 1 billion years.
(c) 500 million years.
(d) 2 billion years.

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

5. What punishment did Galileo suffer as a result of his works?
(a) He was burned at the stake.
(b) He was beheaded.
(c) He was imprisoned for life.
(d) He was put under permanent house arrest.

Short Answer Questions

1. What major change have humans made to the environment that would be easily detectable from space?

2. The atmosphere of Venus would best be described as which of the following?

3. How much bigger is Neptune than Earth?

4. In what century was the geocentric theory conclusively disproved?

5. What visual resolution would be required to determine that humans are related to the intelligence on Earth?

(see the answer key)

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