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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. The Anthropic Principle is divided into two theories that are termed what?
(a) Greater and lesser.
(b) Old and new.
(c) Strong and weak.
(d) Orthodox and reformed.

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

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

4. What space probe was an important part of Sagan's career, and passed by a major planet in 1976?
(a) Ion.
(b) Newton.
(c) Tesla.
(d) Viking.

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

Short Answer Questions

1. What scientist is well-known for writing about the differences between species of animals?

2. How fast was Voyager I moving in 1990?

3. When was Venus first explored by a space probe?

4. When did the belief that Venus was a "sister planet" to Earth become dispelled?

5. What abstract concept does Sagan specifically say he is optimistic about?

(see the answer key)

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