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

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

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

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

5. Sagan estimates that intelligent life might arise on average in one out of how many stars?
(a) One trillion.
(b) One billion.
(c) One million.
(d) Ten thousand.

6. 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 great benefits in a limited scope.
(c) It has high costs.
(d) It is highly profitable.

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

8. Sagan suggests that the Apollo missions were primarily about what?
(a) Technology.
(b) Military strategy.
(c) Science.
(d) Politics.

9. Why do some suggest capturing asteroids in Earth orbit?
(a) To use them as weapons.
(b) To use them as space stations.
(c) To mine them for resources.
(d) To study them.

10. 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.

11. Which of the following planets is NOT known to have a ring system?
(a) Saturn.
(b) Jupiter.
(c) Uranus.
(d) Venus.

12. What does Sagan say the rings of Saturn composed of?
(a) Frozen methane clouds.
(b) Discs of stone.
(c) Chunks of destroyed planets.
(d) Tiny ice worlds.

13. In what year did humans visit the moon for the last time?
(a) 1969.
(b) 1972.
(c) 1975.
(d) 1979.

14. What moon was found to have volcanoes?
(a) Persephone.
(b) Europa.
(c) Io.
(d) Terpsichore.

15. What does Martian soil seem to contain?
(a) Organic material.
(b) Ice.
(c) Oil.
(d) Methane.

Short Answer Questions

1. What is the shape of the galaxy closest to the Milky Way?

2. What fuel source might be viable within asteroids?

3. How does Sagan characterize most of the benefits gleaned from the space programs of the 60s and 70s?

4. The atmosphere of Venus would best be described as which of the following?

5. What type of Mars mission did President Reagan turn down?

(see the answer keys)

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