GEOG 111 Study Guide - Final Guide: Google Earth, Antarctic Circle
1 Sep 2015
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Few practice questions (no submission required: the diameter of earth at the equator is 12,756 km. Calculate the circumference of earth at the equator and determine the approximate distance spanned by 1 of longitude at the. Circumference of earth: 40,074 km pi x 12,756. Distance spanned by 1 of longitude at the equator: 111. 3 km 40,074 / 360: using your answer of question 1 above, determine the distance spanned by 1 minute of longitude at the equator in kilometers. Distance spanned by 1 minute: 1. 86 km 111. 3 / 60: using your answer of question 2 above, determine the distance spanned by one second of longitude at the equator in kilometers and meters. Distance spanned by 1 second: 0. 031 km, 31 m 1. 86 / 60 0. 031 x 1000: explain what happens to the distance spanned by 1 as we move from the equator towards the north pole.
