| A | B |
| equator | an imaginary line that goes all the way around the earth, dividing it into two equal halves, a northern half and a southern half |
| Northern Hemisphere | the half of the earth that is north of the equator |
| Southern Hemisphere | the half of the earth that is south of the equator |
| Prime Meridian | an imaginary line that goes all the way around the earth, dividing it into two equal halves, an eastern half and a western half |
| Eastern Hemisphere | the half of the earth that is east of the Prime Meridian |
| Western Hemisphere | the half of the earth that is west of the Prime Meridian |
| North Pole | the point which is furthest north on the earth |
| South Pole | the point which is furthest south on the earth |
| lines of latitude | imaginary parallel lines, that run east and west around the earth, also called parallels |
| parallels | another name for lines of latitude |
| lines of longitude | imaginary lines that run north and south around the earth, they are not parallel and are also called meridians |
| meridians | another name for lines of longitude |