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1 | |
Why are no impact craters seen on Io? |
| | A) | it does not have a solid surface |
| | B) | it has extensive volcanic activity |
| | C) | it was very recently captured by the solar system |
| | D) | its icy surface heals very rapidly |
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2 | |
The heat that keeps the interior of Io molten is due to |
| | A) | tides |
| | B) | radioactive materials |
| | C) | frequent meteoroid impacts |
| | D) | a large greenhouse effect |
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3 | |
Suppose a planet is orbited by a number of satellites. Which of the satellites will feel the strongest tidal forces due to the planet? |
| | A) | a large satellite in a close orbit |
| | B) | a large satellite in a distant orbit |
| | C) | a small satellite in a close orbit |
| | D) | a small satellite in a distant orbit |
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4 | |
The surface of Europa (Jupiter's satellite) is very smooth. Why? |
| | A) | it has been scoured by high winds |
| | B) | it is covered by lava flows |
| | C) | meteoroidal impacts have pulverized the surface |
| | D) | it is covered by frozen water |
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5 | |
What is remarkable about the surface of Ganymede? |
| | A) | it shows evidence of ancient tectonic activity |
| | B) | it is the most heavily cratered surface in the solar system |
| | C) | it contains pockets of liquid water |
| | D) | it is dotted with many volcanoes |
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6 | |
What are the bright patches on the surfaces of Callisto and some of the satellites of Saturn? |
| | A) | active volcanoes |
| | B) | regions of freshly exposed ice |
| | C) | stretches of open water |
| | D) | small dust storms |
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7 | |
Why are the inner Galilean satellites denser than the outer ones? |
| | A) | the outer ones contain more icy material |
| | B) | the inner ones contain more iron |
| | C) | the inner ones are larger |
| | D) | the outer ones are made mainly of gas |
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8 | |
The satellites of Saturn, Uranus, and Neptune are made mostly of |
| | A) | ice |
| | B) | rock |
| | C) | metal |
| | D) | gas |
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9 | |
Which of the following correctly describes the atmosphere of Saturn's satellite, Titan? |
| | A) | thick, made of nitrogen, cold |
| | B) | thick, made of carbon dioxide, warm |
| | C) | thin, made of nitrogen, warm |
| | D) | thin, made of carbon dioxide, cold |
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10 | |
What is remarkable about Uranus' satellite Miranda? |
| | A) | it has a bizarre appearance |
| | B) | it has a small ring system of its own |
| | C) | it has a much higher temperature than the other satellites of Uranus |
| | D) | it is almost perfectly smooth |
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