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Exam 8: The Jovian Planets: Giants of the Solar System

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Question 1

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Compare and contrast the Galileo and Cassini missions.

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Both are orbiters of jovian planets, but...

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Their magnetic fields should originate in the planets' _ , but those of Uranus and Neptune don't even come close.

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Contrast the destinations of the probes dispatched by the Galileo and Cassini missions.

How are Jupiter and Saturn similar?

Uranus' rotation axis is tipped over 98 degrees, so its magnetosphere is tipped over the same amount.

Describe how the motion of Uranus led to the discovery of Neptune.

Contrast the Great Red and Great Dark Spots.

In keeping with its Greek god, Neptune probably contains a lot of water, in a slushy mantle ocean.

Which three played a role in the finding of Neptune?

Like the discovery of Uranus, the finding of Neptune was accidental.

Because it has a higher percentage of , Neptune appears even bluer than Uranus.

Methane gas absorbs the color , accounting for the colors of Uranus and Neptune.

We have observed a comet strike Jupiter.

The Great _ _ Spot of Neptune was striking in 1989, but gone by 1995.

The reason the jovian planets lost very little of their original atmosphere is due to their

Contrast the differential rotations of the four jovian planets. Explain.

Uranus and are very similar in size, mass, and color.

William Herschel was the discoverer of Uranus.

While Saturn is almost as large as Jupiter, its mass is only about of Jupiter's.

All four Jovian magnetic fields are good examples of the dynamo theory, with the magnetic fields aligned well with the planets' rapid rotations.