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Lines of Latitude and Longitude

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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Lines of Latitude and Longitude

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  1. Lines of Latitude and Longitude SS 10

  2. 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.

  3. 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.

  4. International Date Line Prime Meridian

  5. 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.

  6. The Earth’s Grid

  7. 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

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