Celestial Mapping Vocabulary

1 words in this vocabulary list

noun An imaginary line that divides the Earth into the Eastern and Western Hemispheres, starting at the North Pole and passing through Greenwich, England.

  • The prime meridian is an imaginary line that divides the Earth into the Eastern Hemisphere and the Western Hemisphere.
  • Hey, did you know that the prime meridian runs through Greenwich, England?
  • The prime meridian is like the center line that splits the globe in half.
  • In a way, the prime meridian acts as the Earth's starting point for measuring longitude.