[amp_mcq option1=”Horizon and equator” option2=”Zenith and pole” option3=”Equator and zenith” option4=”Pole and horizon” correct=”option3″]<\/p>\n
The correct answer is: C. Equator and zenith.<\/p>\n
The declination of a star is its angular distance north or south of the celestial equator. The zenith distance of a star is the angle between the star and the zenith, which is the point directly overhead. The latitude of a place is the angle between the Earth’s equatorial plane and the vertical at that place.<\/p>\n
If the latitude of a place is obtained by subtracting the declination of a star from its zenith distance, then the observed star must be between the equator and the zenith. This is because the zenith distance of a star at the equator is 0 degrees, and the zenith distance of a star at the pole is 90 degrees. Therefore, the zenith distance of a star at any latitude between the equator and the pole must be between 0 degrees and 90 degrees.<\/p>\n
Option A is incorrect because the horizon is the line that separates the sky from the ground. The zenith distance of a star at the horizon is 90 degrees, so the observed star cannot be between the horizon and the equator.<\/p>\n
Option B is incorrect because the zenith is the point directly overhead. The zenith distance of a star at the zenith is 0 degrees, so the observed star cannot be between the zenith and the pole.<\/p>\n
Option D is incorrect because the pole is the point on the Earth’s surface that is directly above the North Pole or the South Pole. The zenith distance of a star at the pole is 90 degrees, so the observed star cannot be between the pole and the horizon.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”Horizon and equator” option2=”Zenith and pole” option3=”Equator and zenith” option4=”Pole and horizon” correct=”option3″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[654],"tags":[],"class_list":["post-8145","post","type-post","status-publish","format-standard","hentry","category-surveying","no-featured-image-padding"],"yoast_head":"\n