Lesson 1 Flashcards
Chapter 3 (14 cards)
coordinates
the points on a specified reference system that define the location of a particular place
Cartesian coordinate system
a reference system for a plane (a flat surface) based on the work of mathematician Rene Descartes, using x- and y-axes
geographic coordinate system
the reference system devised to locate particular places on the surface of the earth, using lines of latitude and longitude
longitude
a coordinate that measures angular distance east or west of the Prime Meridian. Each imaginary line of longitude extends north to south between the poles
prime meridian
the line of longitude that passes through Greenwich, UK, which is the starting point for counting the rest of the lines of longitude
atitude
a coordinate that measures angular distance north or south of the equator. Each imaginary line of latitude is parallel to the equator, and extends east to west around the globe
graticule
the grid pattern in the geographic coordinate system
projection
a method of “flattening” a globe into a form that can be represented on a flat surface
conformal projections
maps that preserve, in the process of projection, angles, although not necessarily lengths
equal-area projections
maps that preserve, in the process of projection, the relative sizes of landmasses; they do not, however, preserve shape well
equidistant projections
maps that preserve, in the process of projection, accurate distances from a central point; they do not, however, preserve shape or size well
compromise, interrupted, and artistic
maps that blend characteristics to maintain as much accuracy as possible in distance, size, and shape, conceding other characteristics; also, maps that have beauty as their main objective
Conic conformal projection maps
used in large-scale surveying and mapping.
