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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 5, Is There Intelligent Life on Earth?, Chapter 6, The Triumph of Voyager.

Multiple Choice Questions

1. When were the Voyager spacecraft launched?
(a) 1982.
(b) 1969.
(c) 1977.
(d) 1972.

2. About how long does Sagan suggest that human beings have been "settled down"?
(a) 100,000 years.
(b) 1,000 years.
(c) 10,000 years.
(d) 50,000 years.

3. What scientist is credited with making the first discoveries that caused problems for the geocentric theory?
(a) Ptolemy.
(b) Galileo.
(c) Copernicus.
(d) Kelper.

4. What scientist is well-known for writing about the differences between species of animals?
(a) Maxwell.
(b) Dawkins.
(c) Hawking.
(d) Darwin.

5. What visual resolution would be required to determine the existence of intelligent life on Earth?
(a) 100 meters.
(b) 1,000 meters.
(c) 10 cm.
(d) 1 meter.

Short Answer Questions

1. Sagan expects both Voyager spacecrafts to continue to broadcast data through what year?

2. What strange motion do all of the stars in the sky exhibit?

3. What type of waves could be analyzed to demonstrate that there is intelligent life on Earth?

4. Sagan says that which of the following is the most immediately obvious thing about the Earth?

5. What does Sagan claim is the key element of humanity's future?

(see the answer key)

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