Download Chapter 8 The Giant Planets

Chapter 8
The Giant
Planets
Hershel
Uranus 1781
Galle
Neptune 1846
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Which two giant planets have a larger
fraction of water than the other two?
A.
B.
C.
D.
E.
Jupiter and Saturn
Uranus and Neptune
Jupiter and Neptune
Saturn and Neptune
Uranus and Jupiter
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You discover a giant planet around
another star. It is as big as Jupiter,
but much more dense. What does
the density tell you?
A. It has less hydrogen and helium
than Jupiter.
B. It has a lower mass than Jupiter.
C. Like Jupiter, it is probably hot inside.
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Why are Jupiter and Saturn not perfectly
spherical?
a. They formed from the collision of two
large planetesimals.
b. They rotate rapidly.
c. They have storms that develop
preferentially along their equators.
d. They have very active aurorae that
heat the atmospheres along the poles.
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Uranus and Neptune do not have bands as
distinct as those on Jupiter and Saturn,
because Uranus and Neptune:
a. don’t have winds that change direction as
much between equator to the poles
b. are composed entirely of hydrogen and
helium and lack more complex molecules
c. are much closer to the Sun and much colder
d. rotate ten times slower
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Neptune and Uranus probably took longer to
form than Jupiter and Saturn, because the
solar nebula was __________ at the radius
of Neptune and Uranus.
a. rotating faster
b. not as dense
c. composed of rockier planetesimals
d. hotter
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Roche Limit Animation
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Which of the giant planets does NOT have
rings?
a. Jupiter
b. Neptune
c. Saturn
d. Uranus
e. All of the giant planets have rings.
Saturn’s bright rings are located within the
Roche limit of Saturn. This supports
the theory that these rings:
a. Are formed of moons torn apart by
tidal stresses
b. Formed at the same time that Saturn
formed.
c. Are relatively recent.
d. Are temporary.
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Particles that make up the rings of Uranus
and Neptune are composed of:
a. rocky material from tidally disrupted
moons
b. organic material that has darkened due to
bombardment by cosmic rays
c. icy material from tidally disrupted comets
d. all of the above
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