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

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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. Sagan suggests that ancient people did not think of the moon as which of the following?
(a) As a place.
(b) As having an opposite side.
(c) As a real object.
(d) As moving.

2. How well does Sagan say his typical audience handles the practical details of a Mars mission?
(a) They are uninterested in the details.
(b) They are meticulous thinkers on the subject.
(c) They are hopelessly incapable of dealing with them.
(d) They are well-connected and able to deal with the details.

3. What fuel source might be viable within asteroids?
(a) Hexane.
(b) Organic solids.
(c) Bacteria byproducts.
(d) Methane.

4. What is an astronomical unit?
(a) The distance from the sun to the Earth.
(b) The radius of the solar system.
(c) The distance that light travels in one minute.
(d) The mean distance between stars.

5. How old are the terrain features generated by Venus' volcanoes?
(a) 500 million years.
(b) 1 billion years.
(c) 2 billion years.
(d) 4 billion years.

6. What is the primary distinguishing feature that SETI looks for to identify a communication from an intelligent source?
(a) Mathematical constants.
(b) Prime Numbers.
(c) Design parameters.
(d) Repetition.

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

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

9. What country does Sagan believe is best suited for undertaking a terraforming effort?
(a) Japan.
(b) China.
(c) The European Union.
(d) The United States.

10. Where does Sagan think it is most likely that life will be found on Mars?
(a) On the surface.
(b) In salt caverns.
(c) In the subsurface rock.
(d) In the ice at the poles.

11. How are chunks of Martian rock studied on Earth?
(a) They are simulated with moon rocks.
(b) They fall to the Earth.
(c) They are captured in space.
(d) They are returned by two-way probes.

12. 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.

13. What type of asteroids does Sagan suggest that men might be able to live inside of?
(a) Silicon asteroids.
(b) Carbon asteroids.
(c) Ice asteroids.
(d) Short-period asteroids.

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

15. What happens to the number of asteroids and comets in the solar system as time goes on?
(a) It remains about the same.
(b) Its change is unknown.
(c) It diminishes.
(d) It increases.

Short Answer Questions

1. About how large a percentage of the mass of the total universe does dark matter make up?

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

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

4. When does Sagan think that the human race will be "on its way"?

5. Where was NASA's first SETI facility located?

(see the answer keys)

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