| A | B |
|---|
| oblate sphere | slightly flattend at poles |
| latitude | position North & South of equator marked by lines running E & W |
| longitude | position E & W of prime meridian marked by lines running N & S |
| Polaris | North Star |
| polar circumference | distance around Earth through Poles |
| hydrosphere | water part of Earth |
| lithosphre | rocky part of Earth |
| atmosphere | gas part of Earth |
| isolines | lines connecting points of equal value |
| contours | isolines connecting equal elevations |
| contour interval | change in elevation between contour lines |
| profile | side view of landscape |
| depression | shown byh hachured contour lines |
| gradient or slope | change of a field quantity between two points |
| prime meridian | reference line for longitude |
| equator | reference line for latitude |
