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. Sagan believes that Titan hosts oceans made of what compound?
(a) Saturated salts.
(b) Methane.
(c) Hydrocarbons.
(d) Water.

2. As of 1990, how many planets did the Voyager craft explore?
(a) Three.
(b) Five.
(c) Four.
(d) Two.

3. How likely does Sagan think it is that the records on Voyager will eventually be found?
(a) It is reasonably likely.
(b) It is unlikely.
(c) It is almost impossible.
(d) It is almost certain.

4. What does Sagan say that philosophy and religion should provide?
(a) Truth.
(b) Comfort.
(c) Kindness.
(d) Guidance.

5. Sagan says that which of the following is the most immediately obvious thing about the Earth?
(a) Its meteorological features.
(b) The existence of intelligent life.
(c) The existence of life.
(d) Its geological features.

6. What concept does Sagan suggest that the image of the "pale blue dot" mocks?
(a) Individuality.
(b) Technology.
(c) Human conceit.
(d) Human achievement.

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

8. What unusual source of energy do the Voyager spacecraft take advantage of?
(a) Planetary gravity.
(b) Vacuum energy.
(c) Cosmic rays.
(d) Solar wind.

9. What criticism does Sagan make of NASA in Chapter 6, "The Triumph of Voyager"?
(a) It has made many engineering mistakes.
(b) It is essentially incompetent.
(c) It cannot correct its mistakes.
(d) It is unconcerned with human safety in spaceflight.

10. Many of organic molecules arrived on Earth from what source?
(a) Space dust.
(b) Comets.
(c) Meteors.
(d) Asteroids.

11. Earth will most likely lose contact with the Voyager probes when what happens?
(a) Their solar cells die.
(b) They reach the Kuiper belt.
(c) They pass the troposphere.
(d) Their radio transmitters die.

12. Which of the following is one of the "great demotions" that Sagan cites?
(a) Light and magnetism are the same thing.
(b) There are planets orbiting other stars.
(c) There may have been life on Mars.
(d) The Earth is 6 billion years old.

13. How many planets were known to ancient people?
(a) Five.
(b) Four.
(c) Three.
(d) Six.

14. Sagan suggests that the image of the "pale blue dot" teaches the need for what?
(a) Science education.
(b) Kindness.
(c) Peace.
(d) Space exploration.

15. What punishment did Galileo suffer as a result of his works?
(a) He was beheaded.
(b) He was put under permanent house arrest.
(c) He was imprisoned for life.
(d) He was burned at the stake.

Short Answer Questions

1. How does Sagan describe his reaction to the difficulties in detecting human life and intelligence on Earth from space?

2. How does Sagan say that science relates to the existence of a divine being?

3. The Voyager probes found large amounts of what element on Titan?

4. What scientist is well-known for writing about the differences between species of animals?

5. What does Sagan claim is the key element of humanity's future?

(see the answer keys)

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