Which hemisphere is indicated by the Prime Meridian?

The Prime Meridian is a crucial reference line in geography, serving as the dividing line between the Eastern and Western Hemispheres. Established at 0 degrees longitude, this line runs from the North Pole to the South Pole and passes through Greenwich, England.

Thus, the Prime Meridian effectively separates the globe into two halves: all longitudes east of this line are categorized as part of the Eastern Hemisphere, while those to the west fall under the Western Hemisphere. This is why the correct answer is that the Prime Meridian indicates the Western and Eastern hemispheres.

While the other hemispheres—Northern and Southern—are delineated by the Equator, they do not directly relate to the Prime Meridian. The options referencing the Northwestern and Southeastern or even claiming all hemispheres are indicated by the Prime Meridian misinterpret the distinct roles of these geographical markers. Therefore, the separation of the Earth into only Eastern and Western is unequivocally tied to the Prime Meridian.