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Exam 7: Comparative Planetology I: Our Solar System

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Exam 1: Astronomy and the Universe78 Questionsadd course
Exam 2: Knowing the Heavens99 Questionsadd course
Exam 3: Eclipses and the Motion of the Moon67 Questionsadd course
Exam 4: Gravitation and the Waltz of the Planets105 Questionsadd course
Exam 5: The Nature of Light91 Questionsadd course
Exam 6: Optics and Telescopes97 Questionsadd course
Exam 7: Comparative Planetology I: Our Solar System63 Questionsadd course
Exam 8: Comparative Planetology II: the Origin of Our Solar System53 Questionsadd course
Exam 9: The Living Earth78 Questionsadd course
Exam 10: Our Barren Moon101 Questionsadd course
Exam 11: Mercury, Venus, and Mars: Terrestrial, yet Unique99 Questionsadd course
Exam 12: Jupiter and Saturn: Lords of the Planets97 Questionsadd course
Exam 13: Jupiter and Saturns Satellites of Fire and Ice110 Questionsadd course
Exam 14: Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds105 Questionsadd course
Exam 15: Asteroids, Comets, and Impacts80 Questionsadd course
Exam 16: Our Star, the Sun68 Questionsadd course
Exam 17: The Nature of the Stars113 Questionsadd course
Exam 18: The Birth of Stars97 Questionsadd course
Exam 19: Stellar Evolution: on and After the Main Sequence64 Questionsadd course
Exam 20: Stellar Evolution: The Death of Stars78 Questionsadd course
Exam 21: Stellar Remnants: Neutron Stars and Black Holes107 Questionsadd course
Exam 22: Our Galaxy48 Questionsadd course
Exam 23: Galaxies85 Questionsadd course
Exam 24: Quasars and Active Galaxies73 Questionsadd course
Exam 25: Cosmology: The Origin and Evolution of the Universe68 Questionsadd course
Exam 26: Exploring the Early Universe72 Questionsadd course
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Each type of molecule has the same average kinetic energy in a planetary atmosphere. As a result (and knowing that an oxygen [O2] molecule has twice the mass of a methane [CH4] molecule), we can say that in this atmosphere the average speed of an oxygen molecule is:

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Question 61

A typical asteroid is

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Question 62

The planet whose orbit is inclined at the lowest angle to the plane of the ecliptic is:

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Question 63
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