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Cards In This Set
| Front | Back |
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The planet's orbital
period is:
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the time it takes to return
to the same location in the sky, relative to the Sun.
|
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Which body has the
greatest gravitational pull on Earth?
|
the Sun
|
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Without the greenhouse
effect operating in our atmosphere,
|
Earth would have an average
temperature of -23 degrees Celsius.
|
|
The region around
Earth where the magnetic field traps charged particles is the:
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Van Allen Radiation Belts.
|
|
The critical part of
the atmosphere for protecting life on the ground from excessive ultraviolet
radiation is the:
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ozone layer.
|
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For Earth, from the
center outward, the correct order is:
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solid metallic inner core,
molten metal outer core, silicate mantle and crust.
|
|
Which of the following
are terrestrial planets?
|
Mercury, Venus, Earth, and
Mars
|
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Which planet breaks
the most rules, based on its odd orbit?
|
Pluto
|
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The presence of a
magnetic field is a good indication that:
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we have a liquid metal
outer core, spinning rapidly as we rotate.
|
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Which major
atmospheric component is chiefly a product of life processes?
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oxygen
|
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Which of these is NOT
a jovian planet?
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Pluto
|
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How do the densities
of the jovian and terrestrial planets compare?
|
All terrestrials are more
dense than any of the jovians
|
|
Which of the following
is NOT a way that terrestrial and jovian planets differ?
|
Jovian orbits are more
eccentric than terrestrials, and farther off the ecliptic.
|
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What is the goal of
comparative planetology?
|
to determine the origin and
evolution of the solar system
|
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In what part of our
atmosphere do we live?
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troposphere
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