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14 Cards in this Set
- Front
- Back
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mass
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.012 earth's
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radius
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.27 earth's
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density
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3300 kg/m^3 [3.3 kg/liter]
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unusual motion
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SYNCHRONOUS ROTATION!, review tidal interactions
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interior
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cool (relative to earth's core) not iron rich
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crust
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thicker on far side, thinner on earth side
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major geologic activity
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impact cratering
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main features
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maria(dark smooth, few craters, basalts), highlands (bright, rough, anorthosites)
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types of rocks
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basalts, anorthosites, breccia, and regolith
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probes
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apollo missions: 1st two men on moon: armstrong and aldrin
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geologic history
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formed from a collision-4.5 billion years
initially molten |
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early period of heavy cratering
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highlands formed
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later period
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few impacts, some large- maria formed
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essentially geologically dead
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3 billion years ago
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