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Name:Date:Earth SciencePeriod:Celestial ObservationsThe spinning of Earth on its axis causes the apparent rising and setting of the Sun, onlySun and the Moon, onlyMoon and some stars, onlySun, the Moon and some starsWhich photograph of star trails was taken by an observer facing directly north in New York State?The constellation Pisces changes position during a night, as shown in the diagram below.Which motion is mainly responsible for this change in position?revolution of Earth around the Sunrotation of Earth on its axisrevolution of Pisces around the Sunrotation of Pisces on its axisAs viewed from Earth, most stars appear to move across the sky each night becauseEarth revolves around the SunEarth rotates on its axisstars orbit around Earthstars revolve around the center of the galaxyWhy do stars appear to move through the night sky at a rate of 15 degrees per hour?The Earth actually moves around the Sun at a rate of 15? per hour.The stars actually move around the center of the galaxy at a rate of 15? per hour.The Earth actually rotates at a rate of 15? per hour.The stars actually revolve around the Earth at a rate of 15? per hour.To a nighttime observer on Earth, how many degrees do the stars appear to move around Polaris in 3 hours?60?3) 3?45?4) 15?An observer in New York State took a time exposure photograph from 10 p.m. until midnight of the stars over the northern horizon. Which diagram best represents this photograph?An observer took a time exposure photograph of Polaris and five nearby stars. How many hours were required to form these star paths? 63) 824) 4At a location in the Northern Hemisphere, a camera was placed outside at night with the lens pointing straight up. The shutter was left open for four hours, resulting in the star trails shown below.At which latitude were these star trails observed?a) 1° N 2) 30° N 3) 60° N4) 90° NBase your answers to questions 10 through 14 on the star chart below, which shows the locations of several constellations visible in the night sky. These constellations appear to move counterclockwise around the star in the center of the chart. Straight lines are at 15-degree intervals. Merak and Dubhe are two stars in the Big Dipper.Identify the star located in the center of this star chart. How many degrees would the star directly below the “ss” in Cassiopeia appear to move in 3 hours? Which Earth motion causes the apparent daily movement of these constellations? The stars Merak and Dubhe are located within the same galaxy as our Sun. Identify the galaxy in which these stars are located. On the chart of the night below, Circle the pointer stars in the Big Dipper that would be used to locate Polaris.Draw an arrow to indicate the direction the Big Dipper will move over the course of the next few hours of the night. Celestial Observations - Answer Key412232144Polaris45?Earth’s rotationMilky Way Galaxy ................
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