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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. What role does Sagan suggest that religion has played in the development of science?
(a) Religion informs and guides scientific development.
(b) Religiously-minded individuals often become scientists.
(c) Science progressed in spite of religion.
(d) Religion has aided science in significant ways.

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

3. When probes enter the atmospheres of other planets, what color do they often see the sky to be?
(a) Blue.
(b) Yellow.
(c) Red.
(d) Black.

4. What does Sagan say is an easy way to visually identify planets?
(a) Their size.
(b) The color of their atmospheres.
(c) Their movements.
(d) Their brightness.

5. What concept does Sagan suggest that the image of the "pale blue dot" mocks?
(a) Human achievement.
(b) Human conceit.
(c) Individuality.
(d) Technology.

Short Answer Questions

1. Which of the following does Sagan NOT cite as evidence for the age of the universe?

2. CFCs are chemicals that is primarily hazardous to the environment in what area?

3. According to Sagan, how do early Earth and Titan compare?

4. How many planets were known to ancient people?

5. According to Sagan, which of the following was the most notable historical tool that humans used to explore the world?

(see the answer key)

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