Geog Review 1 - Latitude and Longitude Latitude-an angular...

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Latitude and Longitude Latitude—an angular distance north or south of the equator Measure north and south, parallel to equator North and south poles are at 90 ° Parallel—names the line that runs around the earth (49 th parallel—49 is the degree, parallel is the line) Measured by north star, southern cross, or sun Separates geographical zones o Arctic o Subarctic o Midlatitude o Subtropical o Equatorial and tropical Longitude—an angular distance east or west of a point on earth’s surface Measured from the center of the earth—east and west of the prime meridian (in Greenwich England) Measured by time Earth-Sun Relationships 1) Insolation—incoming solar radiation (radiation arriving at Earth’s atmosphere and surface) Solar constant—average insolation received when Earth is at its average distance from the Sun Uneven Distribution of Insolation o Because earth is on a tilt, insolation is inherently uneven (creates seasons) o
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