katie stonesifer S09 geosc210Exercise2

katie stonesifer S09 geosc210Exercise2 - night must it be?...

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GEOSC 210-01 EXERCISE #2 Page 1 of 1 Katie Stonesifer Read Essay One 1. Where on the celestial sphere would you look for the planets? In the night sky, with the stars. 2. How long does it take for the moon to go through a cycle of phases? 28 days. 3. Will a planet in retrograde motion rise in the east or the west? Always in the east. 4. If you triple your distance from an object, what happens to the angular size of that object compared to the original angular size you observed? It becomes ___X the original size. Erase all answers except the correct answer. g) 3 5. Approximately where would you look for Mercury in the sky at sunset? To the east. 6. If a planet is at opposition and you see it high in the sky, about what time of
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Unformatted text preview: night must it be? Midnight. 7. What is declination? On page 69 what is the declination of the large orange galaxy, M31? The east to West lines of the sky, like latitude on the earth. 43 degrees 8. What is right ascension? On page 69 what is the right ascension of M31? It plays the same role as longitude but for the sky. About 45 minutes. 9. Using the data that you collected from EXERCISE #1 calculate: CIRCUMFERENCE / DIAMETER = _____40/16= 2.5 CIRCUMFERENCE / RADIUS = _____40/8= 5 10. From the star chart on page 69 it appears that all of the stars in the sky are fixed. Are the stars fixed or are they moving? They are moving extremely fast, but they appear to be fixed....
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