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ASTR 1101-001 Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture10]

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Exam #1 Results

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Total score composed of two parts: –(g1) score on scale- model homework assignment is 25% –(g2) score on in-class exam is 75% Where to find scores: –g1 at bottom of exam –g2 at top-left of exam Example: g1 = 17/25; g2 = 23/27 grade = 25*g1 + 75*g2 = 89

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Exam #1 Results Total score composed of two parts: –(g1) score on scale- model homework assignment is 25% –(g2) score on in-class exam is 75% Where to find scores: –g1 at bottom of exam –g2 at top-left of exam Example: g1 = 17/25; g2 = 23/27 grade = 25*g1 + 75*g2 = 89

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Exam #1 Results Total score composed of two parts: –(g1) score on scale- model homework assignment is 25% –(g2) score on in-class exam is 75% Where to find scores: –g1 at bottom of exam –g2 at top-left of exam Example: g1 = 17/25; g2 = 23/27 grade = 25*g1 + 75*g2 = 89

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Exam #1 Results Total score composed of two parts: –(g1) score on scale- model homework assignment is 25% –(g2) score on in-class exam is 75% Where to find scores: –g1 at bottom of exam –g2 at top-left of exam Example: g1 = 17/25; g2 = 23/27 grade = 25*g1 + 75*g2 = 89

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Begin Chapter 4 Geocentric Model to Explain ‘apparent’ Motion of Celestial Objects –24-hour rotation of celestial sphere (east-to- west) to explain diurnal motion of stars –Slow (monthly and yearly) eastwardly motion of moon and sun due to the presumed orbit of these two objects about the Earth –Apparent motion of planets was more difficult to explain; throughout each year, they appear to wander back and forth with varying speed

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Begin Chapter 4 Geocentric Model to Explain ‘apparent’ Motion of Celestial Objects –24-hour rotation of celestial sphere (east-to- west) to explain diurnal motion of stars –Slow (monthly and yearly) eastwardly motion of moon and sun due to the presumed orbit of these two objects about the Earth –Apparent motion of planets was more difficult to explain; throughout each year, they appear to wander back and forth with varying speed

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Begin Chapter 4 Geocentric Model to Explain ‘apparent’ Motion of Celestial Objects –24-hour rotation of celestial sphere (east-to- west) to explain diurnal motion of stars –Slow (monthly and yearly) eastwardly motion of moon and sun due to the presumed orbit of these two objects about the Earth –Apparent motion of planets was more difficult to explain; throughout each year, they appear to wander back and forth with varying speed

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ASTR 1101-001 Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture12]

ASTR 1101-001 Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture12]

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