Details Title: Astromomy at Baylor PHY 1455 Description: the final exam review already made Total Flash Cards: 21 Created: 12/10/2008 15:54:13		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 who rejected the geocentric world view Definition Aristarchus Term who was most associated with the ancient greek world view Definition Aristotle Term who wrote the book ALMAGEST Definition Ptolemy Term who accurately determined the size of the Earth Definition Eratosthenes Term what is the geocentric model of the Universe Definition Earth is the center of the universe and the planets rotate around it Term what is the heliocentric model Definition Sun is the center of the universe and the planets rotate around it Term who came up with the Heliocentric world view Definition Copernicus Term who is Tycho Brahe Definition the last astronomer without a telescope. Term who provided Kepler with the data needed in order to develop his 3 Laws Definition Tyco Brahe Term who came up with the laws of planetary motion Definition J. Kepler Term what is Kepler's 1st law Definition planets move in elliptical orbits with the Sun at one focus of the ellipse Term what is Kepler's 2nd law Definition planets sweep over equal areas in equal time intervals (faster when closer to the sun, and slower when further from the sun) Term what is Kepler's 3rd Law Definition p^2=a^3 the amount of time a planet takes to orbit the Sun, P is related to its orbit's size, a the planet further away takes longer to orbit. Term what is Newton's 1st law Definition a body maintains the same velocity unless forces act on it. a body continues in a state of rest, or in uniform motion in a straight line at a constant speed, unless made to change that state by forces acting on it. Term what is Newton's 2nd law Definition F=ma Term what is Newton's 3rd Law Definition for every action there's an opposite reaction Term what is a blackbody Definition the perfect emitter and absorber of radiation. any light that goes in is absorbed, and if any light is steen it is due to temperature Term which two laws applies to the blackbody Definition Wien's Law and Stefan's Law Term what is Wien's Law Definition the shorter the wavelength the hotter Term what is stefan's law Definition the hotter the object the brighter Term what tells the source of the spectrums Definition Kirchhoff's Law