AS101 Study Guide - Roche Limit, Ring System, Ellipse
Document Summary
Mars was not able to sustain a significant greenhouse effect because its interior cooled too quickly, but evidence suggests liquid water flowed on its surface in the distant past. Jupiter is a liquid hydrogen giant with weather features driven by strong convection. Be able to describe how small bodies can undergo geologic activity. Understand how natural satellites create and maintain planetary ring systems: http://vimeo. com/40234826 another version: http://vimeo. com/24410924. 67 natural satellites: four galilean moons are the largest and all orbit in jupiter"s equatorial plane the others are smaller and mostly non-spherical probably captured asteroids. Key observations: io and europa rock and metal, differentiated. Hundreds of volcanoes continual resurfacing from ash craterless http://solarsystem. nasa. gov/multimedia/display. cfm?category=planets&im_id=129. Density: 3 water rocky w/ thin, clean icy crust smooth areas and long ridges, few craters, ice rafts . Why are io and europa active? few craters moons must be geologically active. But both are too small to retain heat from formation.
