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

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

Multiple Choice Questions

1. At the time of the writing of this book, what is the farthest planet that humans had reached through the use of exploratory probes?
(a) Pluto.
(b) Neptune.
(c) Uranus.
(d) Saturn.

2. What material that humans have added to the environment would be easily detectable from space?
(a) Chlorofluorocarbons.
(b) Carbon dioxide.
(c) Plastics.
(d) Methane.

3. What abstract concept does Sagan specifically say he is optimistic about?
(a) Human destiny.
(b) The human capacity for love and discovery.
(c) The human prospect.
(d) The future.

4. Which of the following is NOT one of the ways that early planets may have been made incapable of bearing life?
(a) Being thrown into outer space.
(b) Being pushed into a distant orbit.
(c) Falling into the sun.
(d) Being heavily bombarded by meteors.

5. What scientist is credited with making the first discoveries that caused problems for the geocentric theory?
(a) Copernicus.
(b) Galileo.
(c) Kelper.
(d) Ptolemy.

6. What does Sagan claim is the key element of humanity's future?
(a) Faster than light travel.
(b) Deep space travel.
(c) Terraforming.
(d) Distant worlds.

7. Einstein's work undermined what concept?
(a) That humans can travel to distant stars.
(b) That our frame of motion is stationary.
(c) That the Sun is unique.
(d) That light is the fastest thing in the universe.

8. What did Galileo demonstrate?
(a) The moon does not orbit the Earth.
(b) The Earth is not the only planet.
(c) The stars are fixed.
(d) The Sun is just a star.

9. Which of the following is a major point opponents of space exploration raise?
(a) No good has ever come of space exploration.
(b) There is nothing of value anywhere else in the solar system.
(c) Space exploration exists for national prestige only.
(d) The problems on Earth should be solved first.

10. What did ancient people notice about planets that set them apart from the stars?
(a) They were much larger.
(b) They had complex motions and were not fixed.
(c) They grew closer from time to time.
(d) They had unique colors.

11. What does the Geocentric theory state?
(a) The Earth is a flat disc.
(b) The sun moves around the Earth.
(c) The planets and heavens are all fixed.
(d) The Earth moves in a perfect circle.

12. What other medium was used to express the desire to wander, according to Sagan, as human civilization developed?
(a) Law.
(b) Ethics.
(c) Technology.
(d) Religion.

13. What is notable about the stars in Sagan's distant picture of the Earth?
(a) An immense number are visible.
(b) They appear very close.
(c) They have many different colors.
(d) Very few are visible.

14. In what century was the geocentric theory conclusively disproved?
(a) The 19th century.
(b) The 21st century.
(c) The 13th century.
(d) The 11th century.

15. The Voyager probes found large amounts of what element on Titan?
(a) Iridium.
(b) Helium.
(c) Oxygen.
(d) Nitrogen.

Short Answer Questions

1. The records on the Voyager craft are most like what type of information storage method?

2. Titan orbits what planet?

3. Sagan uses what term to describe a theology that requires God to intentionally mislead human scientists?

4. What concept does Sagan suggest that the image of the "pale blue dot" mocks?

5. The Anthropic Principle is divided into two theories that are termed what?

(see the answer keys)

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