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

2. What does Sagan lament about the study of Titan?
(a) There is no interest in studying it.
(b) There are no probes headed for it.
(c) We still know very little about it.
(d) It is usually impossible to observe.

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

4. 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.

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

6. What astronomical discovery did Galileo make that significantly damaged the geocentric theory?
(a) Planets move in ellipses.
(b) Gravity moves the planets.
(c) Jupiter has its own moons.
(d) Stars are stationary relative to the Earth.

7. Which of the following is NOT one of the major unknowns that Sagan says he will address in this book?
(a) Why humans should explore space.
(b) Whether or not there is intelligent life on nearby planets.
(c) What humanity's future is.
(d) How humans can explore space.

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

9. What visual resolution would be required to determine the existence of intelligent life on Earth?
(a) 1 meter.
(b) 10 cm.
(c) 1,000 meters.
(d) 100 meters.

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

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

12. What major component of the Voyager craft was threatened in Sagan's plan to take a distant picture of Earth?
(a) The telemetry antenna.
(b) The vidicon system.
(c) The solar panel array.
(d) The spectral analyzer.

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

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

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

Short Answer Questions

1. What does Sagan suggest that cavemen were usually looking for when they wandered?

2. What does Sagan say is an easy way to visually identify planets?

3. Who helped Sagan calculate that Titan should be host to oceans?

4. When was Neptune discovered?

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

(see the answer keys)

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