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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 15, The Gates of the Wonder World Open, Chapter 16, Scaling Heaven.

Multiple Choice Questions

1. Earth will most likely lose contact with the Voyager probes when what happens?
(a) Their radio transmitters die.
(b) They pass the troposphere.
(c) Their solar cells die.
(d) They reach the Kuiper belt.

2. Where does Sagan think that life will most likely be eventually found?
(a) Earth-like planets around other stars.
(b) Deep space.
(c) A moon in the solar system.
(d) Mars.

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

4. What does Neptune posses at its core that Uranus apparently lacks?
(a) Iron.
(b) A solid surface.
(c) A heat source.
(d) Silicon.

5. How are chunks of Martian rock studied on Earth?
(a) They are captured in space.
(b) They are returned by two-way probes.
(c) They fall to the Earth.
(d) They are simulated with moon rocks.

Short Answer Questions

1. What does Neptune's moon have less of compared to Titan?

2. Einstein's work undermined what concept?

3. Where does Sagan think it is most likely that life will be found on Mars?

4. Mars apparently once had what resource?

5. Sagan compares the human need for religion to what?

(see the answer key)

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