Astronomy Terms: Moon Phases, Celestial Coordinates, Solar Structure, Quizzes of Astronomy

Download Astronomy Terms: Moon Phases, Celestial Coordinates, Solar Structure and more Quizzes Astronomy in PDF only on Docsity! TERM 1 Waning Moon DEFINITION 1 moves from full to new moon TERM 2 Waxing Moon DEFINITION 2 moving from new to full moon TERM 3 Gibbous DEFINITION 3 Between the quarter and full moon TERM 4 Gegenschein DEFINITION 4 the point directly opposite the Sun in the sky TERM 5 Elongation DEFINITION 5 its angular distance from the Sun in the plane of the ecliptic measured in degrees TERM 6 Conjunction DEFINITION 6 the planets align with the sun/elongation of 0 degrees TERM 7 Opposition DEFINITION 7 When a planet's elongation is at 180 degrees It will rise at sunset and be highest in the sky at midnight TERM 8 Superior Conjunction DEFINITION 8 Planets on the other side of the sun TERM 9 Inferior Conjunction DEFINITION 9 Same side of the Sun TERM 10 Occultation DEFINITION 10 Planet passes directly behind the sun at superior conjunction TERM 21 Altitude DEFINITION 21 is measured in degrees above the horizon, and is represented by the vertical arrow TERM 22 Photosphere DEFINITION 22 the "surface" where Sun is opaque, and its continuous, thermal spectrum is emitted at this layer the layers above the photosphere are transparent and are considered to be in the Sun's atmosphere TERM 23 Chromosphere DEFINITION 23 The sun's transparent lower atmosphere. Since it is hot, thin gas, it emits radiation in an emission-line spectrum, but its light is overwhelmed by radiation from the photosphere TERM 24 Corona DEFINITION 24 The Sun's upper atmosphere is also very faint because it is so thin. It is normally overwhelmed by light from the atmosphere Visible during a total solar eclipse TERM 25 Coronagraph DEFINITION 25 which is a disk placed in the telescope's field of view to block the light from the photosphere