ScienceAstronomy Ch.13
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Astronomy Ch.13

Jeffrey Edwards avatar Jeffrey Edwards
25 July 2022
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23 test answers

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question
Uranus was discovered by accident, and mistaken for a comet at first.
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True
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Changes in the predicted motion of Uranus led to the search for an eighth planet.
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True
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The axial tilts of Uranus and Neptune are similar
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False
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The visual appearance of Neptune is much bluer than Uranus
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True
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The rings of Uranus were discovered from Earth when the planet occulted a star.
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True
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The only spacecraft to have visited Uranus and Neptune was:
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Voyager 2.
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In terms of axial tilt, which of the jovians shows us the largest inclination?
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Uranus
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On which planet can the pole remain in darkness for 42 years, and then have 42 years of constant daylight?
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Uranus
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Which of these is true about the seasons of Uranus?
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Its strange tilt produces extreme seasonal variations, especially at the poles.
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Uranus and Neptune appear bluish in color because:
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methane gas in their atmospheres absorbs red light well.
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The unique feature of Neptune is:
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that its atmosphere rotates more slowly than its interior.
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The most abundant component of the atmospheres of Uranus and Neptune is:
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Hydrogen.
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Which statement about the magnetic fields of Uranus and Neptune is FALSE?
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Both pass directly through the cores of their planets, like all other fields.
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What is the prediction for the future of Triton?
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It will provide the raw material for a future Neptunian ring.
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How were the rings of Uranus discovered?
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photometric observations of the occultation of a star made from Earth
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William Herschel thought he had found a comet when he spotted the green disk of
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Uranus.
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Adams and Leverrier both predicted the position of Neptune, based on its effects on
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Uranus.
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The two outer jovian planets appear bluish in color because
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methane absorbs red light.
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Which of these is TRUE about the seasons on Uranus?
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Its strange tilt produces extreme seasonal variations.
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In 1989, Neptune was found to have a huge storm named the
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Great Dark Spot.
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The magnetic fields of which two planets are most unusual?
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Uranus and Neptune
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Which moon of Uranus displays the widest range of surface terrains, suggesting some catastrophic disruption?
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Miranda
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The rings of Neptune
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a) were confirmed by Voyager 2 in 1989. b) number five, with three narrow, two more diffuse. c) all lie within Neptune's Roche limit. d) often appear as clumpy ring arcs, rather than complete and symmetrical. e) All of these are correct.