Video Details

Mapping: Longitude

Grade Levels: 3 - 12
Length: 00:00:38
Website: http://www.uen.org/emedia
Usage rights: Download and retain personal copies in perpetuity.

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Imaginary lines that run from pole to pole are called meridians, or lines of longitude. The Prime Meridian, which passes through Greenwich, England, is zero degrees latitude. Locations west of the prime meridian are measured in degrees west.

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