Astronomy 1345 Exam 1 UTA With Complete Solution

If there are about 6000 stars in the entire sky that can be seen by the unaided human eye, about how many stars would be seen at a particular instant on a given dark night from a single location with an uninterrupted distant horizon? - ANSWER 3000 Are the constellations seasonal? - ANSWER Yes. On a summer night many of the constellations you can see are different from the constellations you can see on a winter night. But there are some constellations you can see all year long. In modern astronomy, the constellations are - ANSWER 88 nonoverlapping sky regions, covering the whole sky. The constellations - ANSWER are 88 in number and cover the entire sky. Which of the following statements correctly describes the relationship between stars and constellations? - ANSWER Every star is located in a constellation. Over what typical time scale will the particular pattern of stars in a specific constellation appear to change from our view on Earth because of celestial motions? - ANSWER thousands of years because of motions of individual stars How much of the overall sky is north of the celestial equator? - ANSWER exactly one-half The zero point of the celestial coordinate known as right ascension (RA) is defined to be the - ANSWER point where the Sun crosses the celestial equator moving northward in its path across the sky. The angle between an observer's horizon and the north celestial pole is governed by- ANSWER latitude The celestial equator is defined as the - AN