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Unformatted text preview: o Larger objects have larger V/A and cool more slowly o Role of size o Smaller worlds cool off faster and harden earlier o Larger worlds hotter, thinner lithosphere o Moon and mercury are now geologically dead Old dead planets are dead and are small because they couldnt hold as much heat o 4 processes that shape surfaces o Volcanism Eruption on the surface Convection heats up upper mantle Rising magma towards the surface Runny lava Floods areas to make mostly flat surfaces Honey/syrup lava Creates the volcanoes/hills Shield volcanoes around the solar system EX: Sapas Mons (Venus), Hawaii (earth), Olympus Mons (Mars) o Impact cratering o Tectonics o Erosion...
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- Spring '08