Science Bowl Astronomy Study Guide Exam Questions With Complete Solutions (Verified And Updated)

Science Bowl Astronomy Study Guide Exam Questions With Complete Solutions (Verified And Updated) Albedo - answerAmount of sunlight that is reflected by the surface of a planet or a satellite, such as the Moon. Aphelion - answerThe point in an orbit in which an object is at its farthest possible distance from the Sun. Apogee - answerThe point in an orbit in which an object is at its farthest possible distance from the Earth. Astronomical Unit (AU) - answerMean distance from the Earth to the Sun. Aurora - answerGlow in the Earth's ionosphere caused by the interaction between Earth's B- field and charged particles from the Sun (solar wind) Cepheid Variable - answerA star of variable luminosity. The luminosity increases sharply and falls off gently with a well-defined period. The period is related to the absolute luminosity of the star and so can be used to estimate the distance to the star. Chromosphere - answerLayer between photosphere and corona of the Sun, mainly composed of excited hydrogen atoms Conjunction - answerWhen 2 bodies appear very close together in the sky Eccentricity - answerRatio of distance between the two foci to the length of the major axis Eclipse - answerThe obstruction of a heavenly body by its entering into the shadow of another body. Ecliptic - answerthe great circle representing the apparent annual path of the sun Equinox - answerThe time when the Sun crosses the celestial equator. -The vernal (Spring) Galilean Moons - answerThe name given to Jupiter's four largest moons, Io, Europa, Callisto & Ganymede. They were discovered independently by Galileo Galilei and Simon Marius.