Test #1 - Monday, September 15

 

Review notes, chapter summaries, homework assignments, chapter questions.

Format: 40 true/false and multiple choice questions (scan forms provided; bring pencil, eraser, and calculator)

 

Chapter 1: Our Place in the Universe

·        Astronomical Unit, parsec, light year

·        relative sizes of Earth and Sun

·        relative distances of the planets and nearest stars

 

Chapter 2: Discovering the Universe for Yourself

·        map of current night sky

·        celestial sphere: NCP, SCP, celestial equator, ecliptic

·        local night sky: altitude, azimuth, zenith, horizon, meridian

·        angular size depends on physical size and distance

·        diurnal (daily) motions, circumpolar stars

·        apparent motion of the Sun over the year, causes of seasons

·        motion and phases of the Moon

·        eclipses of the Sun and Moon

·        motions of the planets, retrograde motion of superior planets

·        stellar parallax = expected annual shift in nearby star positions

 

Chapter 3: The Science of Astronomy

·        geocentric model of Greek scientists, Eratosthenes measurement of the Earth’s circumference

·        Ptolemy: accurate planetary positions using multiple circles (epicycles)

·        Copernicus: Sun centered Solar System

·        Tycho: best measurements of planetary motion (especially for Mars)

·        Kepler: three laws of planetary motion using ellipses

·        Galileo: first telescopic observations of Moon, Sun, stars, Jupiter’s moons, phases of Venus, and their consequences for the Copernican model

 

Supplement 1: Time and Coordinates

·        sidereal (star) and solar (Sun) time systems

·        synodic period of the Moon (with respect to the Sun), terms for special planetary positions

·        time zones, international date line, leap years

·        celestial coordinates right ascension (like longitude) and declination (like latitude)

·        diurnal motion and Sun’s position in the sky seen from different latitudes on Earth, navigation