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Multiple Choice Quiz


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

The heat that keeps the interior of Io molten is due to
B)radioactive materials
C)frequent meteoroid impacts
D)a large greenhouse effect

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

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

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

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

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

The satellites of Saturn, Uranus, and Neptune are made mostly of

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

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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