| A | B |
|---|
| parallels | circles that run E - W around the world |
| latitude | measures the angular distance north or south of the equator |
| 60 minutes | in one degree of latitude or longitude |
| 60 seconds | in one minute of latitude or longitude |
| meridians | used to establish east-west locations |
| prime meridian | 0 degrees longitude |
| equator | 0 degrees latitude |
| great circle | divides the globe into equal halves |
| geomagnetic poles | points on the Earth's surface directly above the magnetic poles of the Earth |
| magnetic declination | angle between the geographic pole and the direction the compass needle points |
| cartography | science of map making |
| Mercator projection | accurate near equator, distorted at poles |
| gnomonic projection | little distortion at point of contact, useful for plotting air travel routes |
| conic projection | touches one line of latitude |
| polyconic projection | uses a series of conic projections to make very accurate maps |
| legend | explains the symbols used on a map |
| scale | indicates the relationship between distance on a map and the actual distance |
| graphic scale | printed line showing fractions and labeled, used to show distance |
| fractional scale | expresses the ratio of units on a map to the units of distance on land |
| verbal scale | statement describing the relationship between distance on a map and actual distance |
