Oral Exam 2 - CH. 12 Explain why Saturn is more oblate than...

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CH. 12 Explain why Saturn is more oblate than Jupiter, even though Saturn rotates more slowly. Even though Saturn rotates a little slower than Jupiter does, Saturn has less mass, and therefore less gravity to pull its material inward. Hence, Saturn’s rotation should cause material at its equator to bulge outward more than on Jupiter, giving Saturn a greater oblateness. If Jupiter does not have any observable solid surface and its atmosphere rotates differentially, how are astronomers able to determine the planet’s internal rotation rate? Astronomers realized that most of the radio energy emitted from Jupiter is nonthermal radiation. This has a very different sort of spectrum from radiation from a heated object and is found in two distinct wavelength ranges. By studing the decametric and decimetric radiation given off by the electric currents within Jupiter, scientists can observe the rotational behaviors and rates of Jupiter. What observations of Saturn’s rings proved that they are not solid? James Clerk Maxwell first realized that if the rings were solid, differences in gravitation pull would cause the rings to tear apart. The Space Shuttle and other spacecraft orbit the Earth well within the Earth’s Roche
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Oral Exam 2 - CH. 12 Explain why Saturn is more oblate than...

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