Details Title: AS102-Exam 1 Description: Butler University, Exam 1, Dr. Murphy Total Flash Cards: 28 Created: 09/23/2009 18:27:51		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Astronomy Flashcards
Cards in this set: Term Kilo Definition 103 Term Mega Definition 106 Term Giga Definition 109 Term Tera Definition 1012 Term Peta Definition 1015 Term Milli Definition 10-3 Term Micro Definition 10-6 Term Nano Definition 10-9 Term Pico Definition 10-12 Term Astronomical Unit -Definition -Conversions (km, light minutes)   Definition The average distance from the Earth to the Sun   * 1.496x108 km * 8 Light Minutes Term Order of Planets (closest to furthest from the sun) Definition Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Term Terrestrial Planets Definition Mercury, Venus, Earth, Mars Term Solar System (Center>Out) Definition Sun Terrestrial Planets Asteroid Belt Jovian Planets Kuiper Belt Oort Cloud Term Definition Term Light Year (Definition and Units) Definition Distance that light can travel in one year   *Distance=VelocityxTime   *9.45x1012 Term Speed of Light Definition c= 3x108 m/sec   c= 3x105 km/sec Term Summer Solstice Definition June 21   The northern hemisphere receives its most direct sunlight, the sun is highest in the sky. Term Winter Solstice Definition December 21   When the sun is in its lowest point in the sky.   Term Spring Equinox Definition March 21   The northern hemisphere goes from being tipped slightly away from the sun to being tipped slightly toward the sun. Term Fall Equinox Definition September 22   Northern Hemisphere first starts to tip away from the sun Term Definition Term Wavelength Definition Distance between peaks Term Frequency Definition # of times a wave moves up and down Term Photons Definition Individual "pieces" of light Term Continuous spectrum Definition Spans a broad range of wavelenths without interruption Term Emission Lines Definition Emits light only at specific wavelengths that depend on its composition and temperature Term Absorption Line Spectrum Definition ? Term Definition