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Physical
Characteristics of Planets
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Terrestrial planets are rocky
with thin atmospheres
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Jovian planets are gaseous
with a rocky core
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much bigger than terrestrial
planets
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Pluto is rock and ice
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There is a physical mechanism
for this division (next lecture)
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Note typo in box 7-1 of text:
Average
density is total mass divided by total VOLUME
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Water density is 1000 (kg/m3)
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Saturn would float in water
Textbook
Figure 7-3: The Sun and the Planets to Scale
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