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Lines of Latitude and Longitude. SS 10. Facts About Latitude. Latitude measures distance north and south from the equator. Lines of latitude are all parallel. The equator marks 0° latitude. Latitude is measured in degrees from 0° to 90° north or south of the equator. The North Pole is 90°N.
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Facts About Latitude • Latitude measures distance north and south from the equator. • Lines of latitude are all parallel. • The equator marks 0° latitude. • Latitude is measured in degrees from 0° to 90° north or south of the equator. • The North Pole is 90°N. • The South Pole is 90°S.
Facts About Longitude • Nations have agreed that the Prime Meridian is the point from which longitude is measured; the Prime Meridian is 0° longitude; it runs through Greenwich, England. • All lines of longitude are Great Circles. • All lines of longitude meet at the North and South Poles. • Lines of longitude are not parallel because they meet at the poles. • Lines of longitude measure distance east and west of the Prime Meridian. • The International Date Line is 180° longitude; neither east nor west. • The length of a degree of longitude gradually decreases as it nears the poles.
International Date Line Prime Meridian
Great Circles • A circle on the surface of the earth that divides the earth into two equal halves. • The equator is the only line of latitude that is a Great Circle. • All lines of longitude are Great Circles.
When you put lines of latitude and lines of longitude together, you get coordinates. • Example: (30°N, 15°E) • Example: Mackenzie, B.C. 55°N,123°W