Ecliptic/Quizzes/Quiz 1

This is one of two quizzes pertinent to Ecliptic (permalink)] that is also relevant to the Antikythera_mechanism/Quizzes. Randomized versions of this quiz are available on this /Testbank/. See also How to use this testbank. (These quizzes will be linked to w:Ecliptic after they have been verified.)

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Ecliptic quiz 1 (basic-geocentric)

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{The ecliptic is the set of all points on the celestial sphere} - occupied by the Moon over the course of one month. - occupied by the Sun and Moon during eclipse season. + occupied by the Sun over the course of a year. - occupied by the Sun over the course of one day. - occupied by the Moon over the course of one day.

{Two great circles on a sphere meet at ______ point(s)} - 0 - 1 + 2 - 3 - 4

{A star in any of the 12 zodiacal constellations rises and sets near where the Sun rises and sets, except that the cycle is repeated every 24 hours minus approximately 4 minutes.} + true - false

{Four minutes times 365 is approximately one} + day - year - month - week

{As the Sun rises and sets it typically spends 4 minutes in each constellation of the Zodiac} - true + false

{One minute of arc describes and angle 60 times smaller than one degree, which is NOT equal to the observed angular motion of a star in one minute.} + true - false

{One minute of arc describes and angle 60 times smaller than one degree, which nearly equals the observed angular motion of a star in one minute.} - true + false

{In the course of a year, the Sun is always in or near one of the 12 zodiacal constellations} + true - false

{$\frac{360}{24}=\frac{36\cdot 10}{12\cdot 2}=\frac{12\cdot 3\cdot 5\cdot 2}{12\cdot 2}$, calculates that the Sun moves 15} - degrees per day compared to the fixed stars + degrees per hour across the sky - degrees per hour compared to the fixed stars - degrees per day across the sky

{$\frac{360\text{degrees}}{30\text{days}}=\frac{36}{3}$, calculates that the Moon moves approximately 13 ______} - degrees per hour across the sky - degrees per hour compared to the fixed stars + degrees per day compared to the fixed stars - degrees per day across the sky

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