astro111n_ch8&9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Why is Jupiter denser than Saturn? | Its higher mass and gravity compress its interior.
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Some jovian planets give off more energy than they receive because of | ongoing contraction or differentiation.
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Which lists the jovian planets in order of increasing distance from the Sun? | Jupiter, Saturn, Uranus, Neptune
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Why does Neptune appear blue and Jupiter red? | Methane in Neptune's atmosphere absorbs red light.
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Why is Io more volcanically active than our moon? | Io has a different internal heat source.
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The main ingredients of most satellites of the jovian planets are | hydrogen compound ices.
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Saturn's many moons affect its rings through | orbital resonances.
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Saturn’s rings are composed of __________. | lots of individual particles of ice and rock
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Saturn’s rings look bright because __________. | light from the Sun reflects off the material in the rings
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Which of the following statements correctly describes the motion of the particles in Saturn’s rings? | Particles in the inner rings orbit Saturn at a faster speed than particles in the outer rings.
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Jupiter nudges the asteroids through the influence of | orbital resonances.
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Can an asteroid be pure metal? | Yes, it must have been the core of a shattered asteroid.
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Did a large terrestrial planet ever form in the region of the asteroid belt? | No, because Jupiter prevented one from accreting
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How big an object causes a typical shooting star? | a grain of sand or a small pebble
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Which are thought to have formed farthest from the Sun? | Kuiper belt comets
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What does Pluto most resemble? | a comet
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According to current evidence, Pluto is best explained as ______. | a large member of the Kuiper belt
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A comet entering the inner solar system from afar will __ | form a coma and some time later form a tail
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During the time that a comet passes through the inner solar system, the comet can appear quite bright because __________. | sunlight reflects off the comet’s tail and coma
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A comet’s plasma tail always points directly away from the Sun because __________. | of pressure exerted by the fast-moving charged particles in the solar wind
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Saturn's rings | are continually supplied by impacts with small moons.
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Created by:
zemca
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