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Term | Definition |
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Reference Map | Shows the location of the geographic areas for which census data are tabulated and disseminated. |
Thematic map | Is a type of map especially designed to show a particular theme connected with a specific geographic area |
GPS | is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth. |
GIS | is a computerized data management system used to capture, store, manage, retrieve, analyze, and display spatial information |
Distance Scale | The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground |
Directional Indicator | A component of the average directional index (ADX) that is used to measure the presence of a downtrend. |
Inset map | A smaller map in a larger map |
Lengend | an explanatory list of the symbols on a map or chart |
Latitude (Parallels) | A set of imaginary lines that run parallel to the equator, and that are used in locating places north or south |
Longitude (Meridians) | A set of imaginary lines that go around the earth over the poles, dividing east and west. |
Equator | The imaginary line that encircles the globe, dividing the earth into northern and southern halves. |
Prime Meridian | The imaginary line at zero meridian used to measure longitude east to west, and dividing the earths east and west halves. |
Northern Hemisphere | of Earth is the half that is north of the equator |
Southern Hemisphere | The southern half of the Earth's surface; the Earth's surface south of the equator. |
Eastern Hemisphere | is a geographical term for the half of the Earth that is east of the Prime Meridian (which crosses Greenwich, England, United Kingdom) and west of 180° longitude. |
Western Hemisphere | The Western Hemisphere is a geographical term for the half of the Earth that lies west of the Prime Meridian and east of the Antimeridian, |
Continents | A landmass above water on the earth. |
Map grid | Grid lines on maps define the coordinate system, and are numbered to provide a unique reference to features |