Astro 120 Fall 2003: Lecture 5 - The Sun, Seasons, and Phases of the Moon, Assignments of Astronomy

Download Astro 120 Fall 2003: Lecture 5 - The Sun, Seasons, and Phases of the Moon and more Assignments Astronomy in PDF only on Docsity! Astro 120 Fall 2003: Lecture 5 page 1 • The Sun on the Meridian Diagram• altitude at noon at equinox• altitude at noon at summer/winter solstice• The Seasons• azimuth of sunrise/sunset at various latitudes• length of time above the horizon in summer and winter• The Motion of the Moon• eastward motion in orbit around the Earth• the sidereal month = 27.3 days• the synodic month = 29.5 days• The Phases of the Moon• caused by varying views of a half-lit sphere from Earth Brief review of last time: The Seasons, the Moon Reading: Bennett, Chapter 2, Sections 2.5 Help Room: Now Open - Schedule on website Mars Viewing: McFarland Park, Saturdays in September Problem Set #1: Available NOW on the Astro 120 Website; Due 9/12-15 Print from your browser! Astro 120 Fall 2003: Lecture 5 page 2The Phases of the Moon 6PM 6AM noonmidn’t newFull 1st Quarter 3rd Quarter CRESCENT GIBBOUS GIBBOUS CRESCENT Waning Waxing Astro 120 Fall 2003: Lecture 5 page 3 Appearance of Moon from Earth Phase crossesmeridian appearance New Moon noon waxing crescent 1st quarter sunset waxing gibbous Full Moon midnight waning gibbous 3rd quarter sunrise waning crescent Astro 120 Fall 2003: Lecture 5 page 4 What is the phase of the moon in this picture? What time of day was this picture taken? WestSouth