astro - unit 7 - blank objs as worksheet

astro - unit 7 - blank objs as worksheet - Unit 7 Page 1 1....

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Unit 7 Page 1 1. the following about variable stars: A) a description of a variable star and that most variable stars represent post-giant stages B) the differences between a regular variable and an irregular variable C) a description of, and be able to distinguish among Cepheid I, Cepheid II, and RR Lyrae stars D) that classical Cepheids are also known as Cepheid I stars and W Virginis Cepheids are known as Cepheid II stars
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Unit 7 Page 2 2. on a plot, lines representing the period-luminosity relation for Cepheid I, Cepheid II, and RR Lyrae stars 3. description of the galactic equator, galactic longitude, and galactic latitude 4. the following about the Sun’s motion in the galaxy: A) the approximate velocity and direction of the Sun about the galactic center
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Unit 7 Page 3 B) the approximate radius of the Sun’s nearly circular revolution about the galactic cen-
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astro - unit 7 - blank objs as worksheet - Unit 7 Page 1 1....

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