Longitude measures the distance east or west from the Prime Meridian, 0°. It helps calculate time zones by determining the local time difference from Greenwich Mean Time (GMT).
Class 6 Social Science Chapter 1 Locating Places on the Earth question answer
Class 6 NCERT Social Science India and the World: Land and the People Chapter 1 Locating Places on the Earth
Longitudes are imaginary lines running from the North Pole to the South Pole, used to measure how far a location is east or west of the Prime Meridian, which passes through Greenwich, London. Longitudes are crucial for calculating time differences. The Earth is divided into 360° of longitude, with 15° corresponding to one hour. For instance, India, located at 77°E longitude, has a time difference of 5 hours and 30 minutes ahead of GMT, establishing its time zone.
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