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

2. According to the plans Sagan discussed, how would nuclear weapons typically be used to stop an asteroid from colliding with the Earth?
(a) By pushing it off-course.
(b) By reversing its orbit.
(c) By destroying it completely.
(d) By splitting it in two.

3. When did the belief that Venus was a "sister planet" to Earth become dispelled?
(a) The late nineteenth century.
(b) The early twentieth century.
(c) The mid twentieth century.
(d) The mid nineteenth century.

4. It is believed that some of Saturn's rings may eventually form into what?
(a) Comets.
(b) Asteroids.
(c) Moons.
(d) Meteors.

5. Sagan describes the "myth" that he believes should be created as centering around what?
(a) Encouragement.
(b) Science.
(c) Discovery.
(d) Tolerance.

Short Answer Questions

1. How well does Sagan say his typical audience handles the practical details of a Mars mission?

2. Which of the following is NOT one of the missions that observed Venus using radar telescopes?

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

4. Sagan says that the moon was once understood as a symbol of which of the following?

5. What did Steven Hawking worry about with regard to black holes?

Short Essay Questions

1. What is unusual about the surface of Venus?

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

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

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

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

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

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

8. What resources does Sagan believe that carbon asteroids have that make them suitable for human habitation?

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

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

(see the answer keys)

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