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

2. What hazard from nuclear weapons causes "nuclear winter"?
(a) Cloud scattering.
(b) Smoke particles in the upper atmosphere.
(c) The erosion of land after plant life is wiped out.
(d) Acid rain.

3. What does Neptune's moon have less of compared to Titan?
(a) Potassium.
(b) Iron.
(c) Ice.
(d) Carbon.

4. How much bigger is Neptune than Earth?
(a) Two hundred times.
(b) Forty times.
(c) Four times.
(d) A hundred times.

5. Sagan expects both Voyager spacecrafts to continue to broadcast data through what year?
(a) 2010.
(b) 2030.
(c) 2015.
(d) 2050.

Short Answer Questions

1. What planet is the "evening star"?

2. What punishment did Galileo suffer as a result of his works?

3. What is notable about pictures taken of the Earth from the moon?

4. Which other nation besides the United States led the way in space exploration?

5. What is the farthest orbital location that humans have ventured to since the last time men went to the moon?

(see the answer key)

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