2/6/20081Lecture #9: Solar System Survey I•Categorizing the Planets.•Overview Planetary Surfaces and Interiors:Density and Interior Composition StructureAstro 102/1041– Density and Interior Composition, Structure.– Planetary Surface Processes.•Dating Planetary Surfaces:– Relative Dating: Counting Craters.– Absolute Dating: Radioactive Decay.Wed Feb 13•InIn-class exam #1!class exam #1!•Have you read and signed the ground rules?•Special accommodations? Cld bk i ddtkAstro 102/1043•Closed book, independent work.•Code of academic integrity will be strictly enforced.•No electronic equipment allowed. •Numerical values of fundamental constants provided.•Memorize the Earth’s diameter and EarthMemorize the Earth’s diameter and Earth-Sun distance!Sun distance!The Main PointPlanetary Surfaces are modified by fjAstro 102/1044four major processes: impacts, volcanism, tectonism, and erosion.•It is convenient and appropriate to divide the 8 planets into two classes:– Inner Planets:Planetary CategoriesAstro 102/1045•Mercury, Venus, Earth, Mars.•"Terrestrial" or Earthlike worlds.– Outer Planets:•Jupiter, Saturn, Uranus Neptune.•"Jovian" or Giant planets.
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