The Prime Meridian separates the Earth into which hemispheres?

• A. Northern and Southern
• B. Eastern and Western
• C. Northern and Western
• D. Southern and Eastern

Answer: (B)

The Prime Meridian divides the world into the Eastern Hemisphere and the Western Hemisphere. This vertical line at 0 degrees longitude runs from the North Pole to the South Pole and serves as the reference for measuring longitude east and west. Everything east of it falls in the Eastern Hemisphere, and everything west of it is in the Western Hemisphere. By contrast, the Equator separates the Northern and Southern Hemispheres, so those two halves are defined by a different line.