Study Guide for the 2nd midterm ------------------------------- Formation of planets in the Solar System Snow line; terrestial vs jovian planets Debris; comets, asteroids; cratering Tidal disruption of satellites; planetary rings; Tidal heating; Io Extra solar systems; tests of nebular theory Radioactivity; half-life; the age of Solar System Heat of formation, differentiation Earth; plate techtonics, volcanos, outgassing Terrestrial atmospheres, escape velocity Earth's atmopsphere: N2, O2, CO2 Photo-dissociation Carbon cycle; significance of liquid water Greenhouse effect; new carbon vs old carbon Jovian planets (gas giants), fast spin, rotational flattening Pressure; Formation of Earth's moon The Sun Photosphere; chromosphere; corona; wind Nuclear fusion in the core Exclusion principle; uncertainty principle; tunneling Neutrinos Convection; solar granulation Sunspots; magnetic field; 11 & 22 year cycles Rotation of the Sun Magnetic field of the Earth Stars Parallax, measuing stellar properties luminosity, temperature, radii Star Binaries and measuring star masses HR diagram; main sequence Lifetimes of stars; ages of stellar clusters Pulsating stars, Cepheids, standard candles