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Which meridian is used as the reference point for measuring longitude?
  • a)
    Tropic of Capricorn
  • b)
    International Date Line
  • c)
    Equator
  • d)
    Prime Meridian
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which meridian is used as the reference point for measuring longitude?...
The Prime Meridian, marked at 0° longitude, is used as the reference point for measuring longitude. It passes through Greenwich, London, and is the starting point for dividing the Earth into Eastern and Western Hemispheres.
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Which meridian is used as the reference point for measuring longitude?...
Prime Meridian as the Reference Point for Measuring Longitude
The Prime Meridian is the line of 0° longitude that runs through the Royal Observatory in Greenwich, England. It is used as the reference point for measuring longitude on Earth.

Significance of the Prime Meridian
- The Prime Meridian divides the Earth into the Eastern Hemisphere and the Western Hemisphere.
- It serves as the starting point for measuring longitude, which is the angular distance east or west of the Prime Meridian.
- All other meridians of longitude are measured in degrees east or west of the Prime Meridian.

Establishment of the Prime Meridian
- The Prime Meridian was established in 1884 at the International Meridian Conference held in Washington D.C., where it was agreed that the line passing through Greenwich would be considered the Prime Meridian.

Importance in Navigation and Timekeeping
- The Prime Meridian is crucial for navigation as it helps sailors and pilots determine their east-west position on Earth.
- It is also essential for coordinating time zones worldwide, as Greenwich Mean Time (GMT) is based on the Prime Meridian.

Conclusion
In conclusion, the Prime Meridian serves as the reference point for measuring longitude on Earth. Its establishment has been critical in navigation, timekeeping, and international coordination, making it a fundamental concept in geography and cartography.
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Which meridian is used as the reference point for measuring longitude?a)Tropic of Capricornb)International Date Linec)Equatord)Prime MeridianCorrect answer is option 'D'. Can you explain this answer?
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