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Fix Astronomy Chapter 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Question 1 How far does our planetary system extend? A. 1 astronomical unit (AU) B. 10 AU C. 500 AU D. 42 light years E. 30 AU Question 2 Observationally, a planet can be distinguished from a star because A. planets twinkle and stars do not twinkle. B. stars twinkle and planets do not twinkle. C. planets appear to be smaller objects. D. stars appear to be closer than planets. E. planets revolve in the opposite direction compared to stars. Question 3 A useful device to show the apparent location of objects in the sky is known as the A. zodiac. B. celestial sphere. C. Milky Way. D. astronomical unit. E. Orion nebula. Question 4 The Moon A. may appear anywhere in the sky. B. always appears in or near the zodiac. C. always appears within a few degrees of the celestial sphere. D. generally appears opposite the Sun. E. is always full at the north geographic pole. Question 5 What makes the North Star, Polaris, special? A. It is the brightest star in the sky. B. It is the star straight overhead. C. It is currently very near the north celestial pole. D. It is the star directly on your northern horizon. E. It can be used to determine your longitude on Earth. Question 6 Which of the following is largest in size? A. 1.2 light years B. size of Pluto's orbit C. 1.0 AU D. diameter of the Milky Way galaxy E. distance from the Earth to the Moon Question 7 The celestial sphere is just another name for our Milky Way galaxy. A. True B. False Question 8 A light year is a unit of time and is equal to 86,400 seconds. A. True B. False Question 9 The horizon cuts the celestial sphere in half at the zenith. A. True B. False Question 10 Local "noon" occurs when the sun is highest in the sky each day. A. True B. False Question 11 There are 98 official constellations, which define the entire sky. A. True B. False Question 12 Relative distance and altitude with respect to the horizon defines the position of any object in the sky. A. True B. False Question 13 On a given night, what is the maximum number of planets readily visible to the naked eye? A. 1 B. 2 C. 3 D. 4 E. 5 Question 14 A finger, held at arm's length, fills an angle of about A. 50 degrees. B. 10 degrees. C. 2 degrees. D. one tenth of a degree. Question 15 Which of the following would be the coordinates of a star that is rising in the northeast? A. azimuth 180 degrees, altitude 90 degrees B. azimuth 145 degrees, altitude 0 degrees C. azimuth 60 degrees, altitude 0 degrees D. azimuth 75 degrees, altitude 90 degrees 1. E 5. C 9. B 13. E 2. B 6. D 10. A 14. C 3. B 7. B 11. B 15. C 4. B 8. B 12. B