Exam 5: The Solar System: Interplanetary Matter and the Birth of the Planets

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Due to their great masses, all four jovian worlds are much denser than the Earth.

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In addition to revolving around the Sun counter clockwise, most planets also rotate on their axis counter clockwise.

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The tail of a comet always points

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Many astronomers now regard Pluto as just one of the largest of the thousands of Kuiper Belt bodies found beyond Neptune.

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The Kuiper Belt is found where in the solar system?

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In the solar nebular theory, the dusty disk condensing around the Sun's equator became the ecliptic plane in which the planets then formed.

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The age of the solar system is determined with dating.

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The extrasolar planets are found mainly by observing the shifts of their stars.

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The Kepler spacecraft has identified more than eight hundred confirmed exoplanets.

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Barringer Crater in Arizona is an example of a meteorite impact.

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Why does the present method of finding extrasolar planets not favor finding solar systems like ours?

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All four jovian planets are thought to have cores larger than Earth.

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The orbits of most comets

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Contrast the Oort cloud and the Kuiper belt as possible origins for comets.

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What class of asteroids is a threat to Earth and other terrestrial planets? Why?

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How did the NEAR mission break new ground, literally?

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Which statement about asteroids is NOT true?

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The Manicouagan reservoir near Quebec is an example of

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All the planets orbit the Sun in exactly the same plane as the Earth.

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Most asteroid orbits lie between those of Mars and .

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