ICSE Class 9 Answered

Lines of latitudes: A latitude is a horizontal line which represents the angular distance of a place located to the north or south of the Equator. An Equator is a 0⁰ latitude. Lines of latitudes are the imaginary lines joining all places having the same latitude towards north or south of the Equator. These are also called parallels of latitudes as they run parallel to the Equator. There are 181 parallels of latitudes. 

Uses: The Equator divides the earth into two equal parts. The part lying to the north of the equator is known as the Northern Hemisphere and the part lying south to the Equator is known as the Southern Hemisphere. Latitudes also help in identifying and locating major heat zones of the earth. Latitudes help us to find out the distance of any place from the Equator based on its degree of latitude. For example Chennai is located at 13⁰N. Since 1⁰ latitude= 111km, the distance of Chennai from the line of Equator will be 13X111= 1443 km.

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