Q. What is longitude?
Top Answer
Solution:
Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth’s surface relative to the Prime Meridian, which is an imaginary line that runs from the North Pole to the South Pole and passes through the Royal Observatory in Greenwich, England.
- Meridians or longitudes are a series of semicircles that run from pole to pole passing through the equator.
- Prime Meridian passes through Greenwich near London and divides the Earth into Eastern and Western hemispheres. Its value is 0°.
- There is a total of 360 meridians of longitude on Earth.
- This line passes through the Royal Observatory at Greenwich near London.
- Longitude has very important function i.e., it determines the local time in relation to Greenwich Mean Time (GMT).
- 1° change of longitude corresponds to 4-minute difference in time.
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