Pale Blue Dot: A Vision of the Human Future in Space Test | Final Test - Hard

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This test consists of 5 short answer questions, 10 short essay questions, and 1 (of 3) essay topics.

Short Answer Questions

1. What type of missions does Sagan recommend in order to prepare to deal with Earth-bound asteroids?

2. Sagan suggests that the Apollo missions were primarily about what?

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

4. What does Sagan believe about weapons of mass destruction?

5. Sagan discusses in detail a theory that Saturn's rings are caused by what effect?

Short Essay Questions

1. Why does Sagan suggest that space exploration aids in protecting the planet?

2. What major environmental catastrophes does Sagan warn against in Chapter 14, "Exploring Other Worlds and Protecting One"?

3. What promising signs does Mars have for being host to life?

4. What location in the solar system either have or are believed to have once had volcanoes?

5. What does Sagan say that it is probably the fate of humanity to "live in the dark"?

6. Why does Sagan believe it is unlikely that a manned mission to Mars will be carried out in the near future?

7. What does Sagan believe black holes have to offer?

8. How is Venus similar to Earth?

9. What does Sagan want to see on Mars?

10. What does Sagan think were the major upsides of the Apollo missions?

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Volcanoes are quite common and relatively active on Earth, and can be observed on solid planetary bodies throughout the solar system.

1) Describe the process of volcanism in general, its causes, and its impact on the environment.

2) Discuss the function and nature of volcanoes on Earth and how they interact with the upper atmosphere and eject particles into space.

3) Describe some of the known active or dormant volcano system observed on other planets and moons.

Essay Topic 2

Sagan regards the Voyager craft as triumphs of engineering and human ingenuity. These craft were designed to explore most of the planets in the solar system, and then to journey outwards from it to the stars.

1) Describe the Voyager craft, their missions, and capabilities. What planets were these craft intended to explore?

2) Discuss the differences between the Voyager mission and previous efforts in space exploration. How were these craft significantly different?

3) Explain Sagan's particular interest in the Voyager craft and why he believes them each to be a triumph.

4) Summarize some of the important observations that the Voyager craft made.

Essay Topic 3

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.

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