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

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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. What planet is the "evening star"?
(a) Saturn.
(b) Venus.
(c) Mercury.
(d) Mars.

2. What types of information does SETI analyze?
(a) Magnetic waves.
(b) Gravitational waves.
(c) Cosmic rays.
(d) Radio waves.

3. Why does Sagan say that Mars is a more desirable target for human exploration than the moon?
(a) It has more resources.
(b) It has more to teach.
(c) It is more inhabitable.
(d) It is more like Earth.

4. At the time this book was written, about how many asteroids were known to have paths that take them close to the Earth?
(a) 500.
(b) 200.
(c) 1000.
(d) 2000.

5. What hazard from nuclear weapons causes "nuclear winter"?
(a) Smoke particles in the upper atmosphere.
(b) The erosion of land after plant life is wiped out.
(c) Acid rain.
(d) Cloud scattering.

Short Answer Questions

1. When does Sagan predict that anti-matter will be mass-manufactured?

2. Which of the following is NOT a major resource on Mars that makes it viable for "terraforming"?

3. How does Sagan characterize most of the benefits gleaned from the space programs of the 60s and 70s?

4. What happens to the number of asteroids and comets in the solar system as time goes on?

5. What process would be critical to terraforming Mars?

Short Essay Questions

1. What is unusual about the ring systems of the planets in our solar system?

2. What does Sagan believe would be necessary for the safety of the human race to be secured?

3. How does Sagan believe that humanity will progress in the next hundred or so generations?

4. What does Sagan conclude about the morality of terraforming and planetary colonization?

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

6. What is the purpose of SETI and how does it operate?

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

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

9. What types of strategies are most practical for stopping an Earth-bound asteroid?

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

(see the answer keys)

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