| Term | Definition |
| latitude | measure distance north or south of the equator |
| longitude | measure distance east or west of the prime meridian |
| Prime Meridian | 0 degrees longitude |
| Equator | 0 degrees latitude |
| International Date Line | Imaginary line halfway around the globe from the Prime Meridian |
| Tropic of Cancer | 33.5 degrees North latitude |
| Tropic of Capricorn | 33.5 degrees South latitude |
| meridians | another name for lines of longitude |
| parallels | another name for lines of latitude |
| North Pole | 90 degrees north |
| South Pole | 90 degrees south |
| 24 | number of time zones |
| 15 | number of degree wide each time zone is |