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. According to Sagan, how profitable is it for a nation to invest in space exploration?
(a) It is not related to a nation's welfare.
(b) It has high costs.
(c) It has great benefits in a limited scope.
(d) It is highly profitable.

2. The primary discipline that Sagan argues nations benefit from by investing in space exploration is called which of the following?
(a) Atmospheric metrics.
(b) Planetary science.
(c) Interstellar surveying.
(d) Gestalt geosurveying.

3. What is the shape of the galaxy closest to the Milky Way?
(a) Spiral.
(b) Globular.
(c) Disc.
(d) Cluster.

4. When was Venus first explored by a space probe?
(a) 1950.
(b) 1970.
(c) 1980.
(d) 1961.

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

Short Answer Questions

1. Mars apparently once had what resource?

2. Sagan suggests that ancient people did not think of the moon as which of the following?

3. What fuel source might be viable within asteroids?

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

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

Short Essay Questions

1. How could planetary tides pull a small planet apart?

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

3. What does Sagan want to see on Mars?

4. What profit motivations exist in a manned mission to Mars?

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

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

7. How well can an asteroid's path be calculated?

8. What is unusual about the surface of Venus?

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

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

(see the answer keys)

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