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. In the analogy Sagan makes in Chapter 5 the reader is asked to imagine they are seeing Earth from what perspective?
(a) Very close up.
(b) For the first time.
(c) From an immense distance.
(d) From a distorted frame of reference.

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

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

4. What planet represents the farthest distance from Earth that the Voyager craft were intended to function at?
(a) Mars.
(b) Uranus.
(c) Saturn
(d) Jupiter.

5. What does Neptune's moon have less of compared to Titan?
(a) Carbon.
(b) Potassium.
(c) Ice.
(d) Iron.

6. William Herschel, the discoverer of Uranus, had what unusual profession?
(a) Poet.
(b) Actor.
(c) Magician.
(d) Musician.

7. Sagan uses what term to describe a theology that requires God to intentionally mislead human scientists?
(a) Unsupportable.
(b) Dogmatic.
(c) Typical.
(d) Malevolent.

8. What visual resolution would be required to determine that humans are related to the intelligence on Earth?
(a) 10 cm.
(b) 1 cm.
(c) 1 meter.
(d) 10 meters.

9. As of the writing of this book, how many moons was Uranus known to have?
(a) Ten.
(b) Five.
(c) Seven.
(d) Twelve.

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

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

12. Besides the Voyager spacecraft, what does Sagan cite as a major triumph by NASA?
(a) The Hubble Telescope.
(b) The moon landings.
(c) The Mars rovers.
(d) The Gemini project.

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

14. At the time this book was written, how many planets were known to exist around other stars?
(a) About fifty.
(b) About twenty.
(c) None.
(d) Ten.

15. Sagan suggests that throughout history, many have claimed that our species is what?
(a) Worthless.
(b) Irredeemable.
(c) Unique.
(d) Essentially good.

Short Answer Questions

1. Which of the following does Sagan NOT cite as evidence for the age of the universe?

2. What does Sagan say that philosophy and religion should provide?

3. Which of the following is NOT one of the ways that Sagan says life seems to be?

4. What is the major difference between space exploration and human exploration in the past?

5. In what way is Titan's cold atmosphere an advantage for the formation of life?

(see the answer keys)

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