AST 101 Study Guide - Final Guide: Photosphere, Chromosphere
Document Summary
Study guide for final exam part ii, chapters 1-11. Why do stars rise and set: earth rotates west to east, so stars appear to move from east to west. What causes the seasons: elliptical orbit around the sun, tilt of earth"s rotation axis. What causes lunar phases: relative positions of the earth, moon, and sun. What determines what stars are visible on a given night: sun moves west to east along the ecliptic at 1 degree per day. How do eclipses of the sun and moon work: the moon passes into the earth"s shadow. How do terrestrial planets differ from jovian planets: terrestrial: made mostly of rock and metal; small; rotate slow; have few or no moons. Jovian: made mostly of hydrogen and helium; larger; rotate rapidly; many moons. How is the sun thought to have formed: cluster that rotates, heats, collapses, and condenses.
