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Multiple Choice Quiz


In which of the following circumstances can Mercury be observed?
A)rising at sunset
B)high in the sky at noon
C)high in the sky a midnight
D)setting at sunrise

Which of the following is true about Mercury's rotation?
A)rotation period equals revolution period
B)planet revolves 3 times for every 2 revolutions because of tidal resonance
C)planet rotates retrograde in about 250 days
D)orbital period is twice rotational period

The scarps which meander across the surface of Mercury probably were
A)cut by flowing lava
B)produced by impacts
C)formed when the crust buckled as it cooled
D)formed when crustal plates ran together during plate tectonics

Which of the following objects has a surface which most nearly resembles that of Mercury?
B)the moon

What does the density of Mercury imply about the nature of its interior?
A)its interior is molten
B)it contains considerable ice
C)some of its fractures were produced by plate tectonics
D)it has a large iron-nickel core

Which of the following best describes the rotation of Venus?
A)rapid and forward (prograde)
B)rapid and backward (retrograde)
C)slow and forward (prograde)
D)slow and backward (retrograde)

Why is the surface of Venus so hot?
A)infrared radiation emitted by the surface can't escape into space
B)Venus absorbs nearly all of the solar radiation that strikes it
C)frequent volcanic eruptions heat the lower atmosphere
D)the surface is heated by radioactivity in surface rocks

Venus atmosphere contains much more carbon dioxide than does the atmosphere of the Earth. What has happened to the carbon dioxide that formerly was in the atmosphere of the Earth?
A)it is frozen in the polar caps
B)it has been lost to space
C)it is incorporated in surface rocks
D)it has been used in the consumption of fossil fuels

The principal constituent of the atmosphere of Venus is:
A)sulphuric acid
B)carbon dioxide

What evidence is there that Venus has plate tectonics?
A)there is no evidence of plate tectonics
B)long mountain ranges
C)subduction trenches
D)midocean ridge systems

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