Quiz 1 Example - News 1 Which of the following directions...

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Unformatted text preview: News! 1. Which of the following directions remains fixed in the sky relative to an observer’s horizon? a the direction to the Sun at noon, over one year; b. the direction to the Moon at noon, over one year; @ the zenith d. the direction to a distant star ( Betelgeuse, in Orion). 2. The right ascension of a star is one coordinate of its position, measured along the : a. ecliptic; b. observer’s horizon; {ka celestial equator . observer’s meridian 3. The celestial coordinates of the star (gamma) Persei are right ascension 3h03m, declination +530, and those of the star 3(rho) Persei are right ascension 3h03m declination +390. Measured along the shortest angle in the sky between the two stars, [3 gamma)Persei is: a. South of (rho) Persei . 1 b. East of “ (rho) Persei i c. West of :l (rho) Persei M (d/North of D (rho) Persei 3 4. One required condition for “ seasons” to occur on a planet is that: a. the planet have a thick atmosphere b. the planet’s distance from Sun varies; CC) the planet has its spin axis tilted with the respect to the perpendicular to its orbital plane. . 5. On December 21 the Eaith’s rotation axis is tipped so that a. it is straight up and down (perpendicular to the Earth’s orbit) b. the north pole is tipped most nearly to the Sun g) the north pole is tipped most strongly away from the Sun . the Sun shines exactly down on the south pole e. the Sun shines exactly down on the equator. 6. Planet X has rotation axis perpendicular to its orbital plane. Its seasons would be: a. shorter than those on Earth b. longer than those on Earth Cg) constant d. the same as those on Earth North P‘oie (lat = 90°N) Betelguese (dec. = +7) ...
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  • Fall '12
  • JulianaConstantinescu
  • Astronomy

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