ASTR 1101 Final: ASTR 1101 The Solar System Astronomy Final Study Guide.docx
Document Summary
Synchronous rotation for all 4- rotates once on it"s axis for each orbit around jupiter. 1:2:4- orbital ratios of io, europa and ganymede. Transit- a satellite passes between us and jupiter. They are composed of equal parts of rock and water ice. Io and europa are about as dense as the moon, which means they"re primarily rocky. Only io shows no traces of water in it. Jupiter and it"s satellites formed like a miniature solar system. Jupiter emitted lots of heat while it was forming, so it"s closest satellites io and europa couldn"t retain water, where as ganymede and callisto could. Io is covered with colorful sulfur compounds ejected from active volcanoes. Tidal heating from it"s orbit causes it"s internal heat. Most volcanically active world in the solar system. Rather than volcanoes on io, there are actually geysers. Sulfur dioxide is heated up in the interior and then shot out through the geysers.
