| A | B |
|---|
| map | representation of the features of a physical body such as Earth |
| true north'geographic North Pole | the direction to the geographic North Pole |
| magnetic declination | difference between the magnetic north and true north |
| magnetic north pole | north pole based on the Earth's magnetic field |
| latitude | the distance north or south from the equator, expressed in degrees (parallels) |
| equator | imaginary circle halfway between the poles that divides the Earth into the Northern and Southern Hemispheres |
| longitude | the distance east and west from the Prime Meridian; expressed in degrees (meridians) |
| prime meridian | zero degree longitude |
| cylindrical projection | (Mercator projection) latitude and longitude lines are straight, latitude liness are spaced farther apart north and south of the equator, areas near poles are wider and longer |
| conic projection | touches the globe at each line of longitude, but only one line of latitude, no distortion along the line of latitude being touched, best for mapping large masses of land that have more area east and west (United States) |
| azimuthal projection | moves surface features to a plane, plane touches globe at only one point with little distortion at this point |
| remote sensing | process of gathering and analyzing information about an object without physically being in touch with the object |
| topographic map | map that shows surface features of Earth, shows natural and human made features |
| elevation | height of an object above sea level |
| contour lines | line that connects points of equal elevation |
| contour interval | the difference in elevation between one contour line and the next |
| relief | the variations in elevation of a land surface; difference between the highest and lowest points of the area being mapped |
| index contour | on a map, a darker, heavier contour line that is usually every fifth line and that indicates a change in elevation |
