|Name: _________________________||Period: ___________________|
This test consists of 5 short answer questions and 1 (of 3) essay topics.
Short Answer Questions
1. Sagan worries about how societies of what type would handle the technology that could stop Earth-bound asteroids?
2. According to the plans Sagan discussed, how would nuclear weapons typically be used to stop an asteroid from colliding with the Earth?
3. When did a "disrupted" comet famously fall into Jupiter?
4. Why does Sagan say that Mars is a more desirable target for human exploration than the moon?
5. Sagan says that the dark matter that surrounds the Milky Way galaxy takes what shape?
Write an essay for ONE of the following topics:
Essay Topic 1
Sagan discusses the a manned mission to Mars as a desirable first step in extending the human race out beyond the Earth but identifies many practical problems with any proposed plan.
1) Explain why Sagan believes that a manned mission should be sent to the planet Mars.
2) Discuss some of the proposals for such a mission, what their aims would be, and how they would be carried out technically.
3) Describe the practical difficulties that Sagan outlines and how they could be overcome.
Essay Topic 2
The heliocentric theory was developed by Copernicus, Galileo, and others, and uprooted the dogmatically endorsed geocentric theory, forever changing the nature of scientific thought in the West.
1) Describe heliocentric theory and the scientists who proposed and developed it.
2) Explain some of the abnormalities and observations that lent support to the heliocentric theory.
3) Discuss the reasons that Sagan believes heliocentric theory was opposed by the church.
4) Describe the impact of the victory of the heliocentric theory over the geocentric model on scientific thinking in the West.
Essay Topic 3
Saturn is known for its beautiful ring system, although at the time this book was written, it was not known how or why planets formed rings.
1) Describe the planet Saturn, its ring system, and its moons.
2) Summarize some of the important information that the Voyager probes gleaned from their passage of the planet.
3) Discuss how planetary tidal forces are believed to contribute to the formation of ring systems.
This section contains 1,855 words
(approx. 7 pages at 300 words per page)