ASTR 111 Study Guide - Midterm Guide: Basalt, Subduction, Plate Tectonics
16 Dec 2016
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Angular momentum (mass x velocity x radius) Skater (arms out = slower b/c radius is larger) Center of mass: can change based on the mass of the object. Spring tides = moon/sun pulled at the same time. Only surface of liquid water (comet hit) Smaller than jupiter/saturn but larger than earth. Similar to uranus (except for axis tilt) Nebular theory: formed from nebula that collapsed and created everything. Other theory: two stars passed close and tore material off that created ss. Flattening gas particles smash together making a uniform flattened disk. In: frost line too hot for h compounds form ices. Out: frost line cold enough for ices to form. 10 times wider than object that made them. Tectonics on mercury: impact craters, volcanism, (basalt), tectonics. Atmosphere: layer of gas that surrounds a world. Balance between energy from sunlight it absorbs and energy of outgoing thermal radiation. Distance from sun determines the total amount of incoming sunlight.
