Earth Sciences 1086F/G Study Guide - Midterm Guide: Dynamo Theory, Solar Wind, Duricrust
13 Jan 2020
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Existence of tertiary atmosphere is due to roles of. Co2, n, ar thin dry air but dense enough to be visible (haze + clouds) Densest body in solar system b/c h2o is dense. No ozone to protect uv from breaking down h2o. Venus earth and mars started from he + h. Hotter than mercury - drier surface than desert (runaway greenhouse effect uv radiation from sun breaks h2o to deuterium and oh) Solid metal inner core around liquid outer (unknown) Region that still has ice doesn"t melt because tidally coupled to sun and this side is never exposed to the sun (aphelion) Escarpments through rings and craters) and hollows believed to allow heat escape. Weak-interaction b/w solar winds and atmosphere = weak magnetosphere. Too small to measure axis = perpendicular to. Abundant d/t biosphere/hydrosphere (prokaryotes and free oxygen -cycle w iron oxide) *photosynthesis allowed for life, water and efficient greenhouse effect.
