Airspace & ChartsCâu 59 / 100
On a sectional chart a horizontal line is labeled 47 degrees 00 minutes N, and tick marks along the adjacent meridian each represent 1 minute of latitude. An airport symbol sits four tick marks north of that labeled line. What is the airport's latitude?
a.47 degrees 00 minutes N, since the airport sits on the labeled parallel itself
b.47 degrees 04 minutes N, four minutes north of the labeled parallel of latitude
c.47 degrees 40 minutes N, because four ticks represent ten minutes each
d.46 degrees 56 minutes N, four minutes south of the labeled parallel of latitude
Giải thích
Each tick mark along a meridian equals one minute of latitude, so counting four ticks north of the 47 degrees 00 minutes N parallel places the airport at 47 degrees 04 minutes N. Latitude increases toward the north in the Northern Hemisphere, which rules out the value south of the labeled line. Ticks on sectionals are one-minute increments, not ten, and the airport is clearly offset from the labeled parallel.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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