DGQ Vocabulary

Cartographer is a person whose profession is drawing maps.

Maps General Purpose Maps- Show a wide range of general information.

Physical Map

indicates the location of landforms like deserts, mountains and plains.

Political Map

are designed to show governmental boundaries of countries, states, and counties, the location of major cities, and bodies of water.

shows a raised 3 dimensional representation of elevated landforms. Contour Line or Topography Map

Special Purpose Maps Special Purpose Maps- maps that emphasize a single idea about an area.

Vegetation Map

Population Density Map

Distribution Map shows how something is spread throughout an area.

Map Projections

Globe

The most accurate representation of the earth's surface is found on a Globe.

Mercator Projection The Mercator projection is a cylindrical map projection. It became the standard map projection for nautical purposes because of its ability to represent lines of constant true bearing or true course It has the correct shape of the continents.

Azimuthal or Polar Projection An Azimuthal projection shows the earth centered in such a way that a straight line coming from the center to any other point represents the shortest distance. Used most with air navigation

Great Circle Route Great circle is the shortest possible distance between any two places on the earth’s surface. Ships and planes usually follow the curve of the great circle.

Robinson Projection Mostly Used Less distortion than the Mercator Projection. The Robinson projection is a map projection popularly used since the 1960s to show the entire world at once. It was specifically created in an attempt to find the good compromise to the problem of readily showing the whole globe as a flat image.

Charts and Graphs

Bar Graph ActivityNumber Visit W/Friends175 Talk on Phone168 Play Sports120 Earn Money120 Use Computers65 Favorite Student After School Activity

Line Graph

Circle Graph

Pictograph

Diagrams