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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 21, To The Sky!, Chapter 22, Tiptoeing Through the Milky Way.

Multiple Choice Questions

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

2. CFCs are chemicals that is primarily hazardous to the environment in what area?
(a) The lithosphere.
(b) The biosphere.
(c) The ozone-layer.
(d) The stratosphere.

3. How old does Sagan state that "fundamentalist monotheists" believe the Earth to be?
(a) 10,000 years old.
(b) 300,000 years old.
(c) 6,000 years old.
(d) 1 million years old.

4. What type of Mars mission did President Reagan turn down?
(a) A manned orbital mission.
(b) A joint mission with the Soviets.
(c) A one-way colonization mission.
(d) A robotic colony-building mission.

5. What characteristic of the atmosphere of Venus was initially impossible to explain?
(a) Its high winds.
(b) Its composition.
(c) Its dark spots.
(d) Its heat.

Short Answer Questions

1. Sagan helped to discover that Saturn provides what critical element to Titan?

2. How far out does the solar corona die out?

3. What is the primary distinguishing feature that SETI looks for to identify a communication from an intelligent source?

4. What is unusual about Uranus's orientation?

5. When did a "disrupted" comet famously fall into Jupiter?

(see the answer key)

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