Learn+to+Map

**Map**: any concrete or abstract representation of the distributions and features that occur on or near the surface of the earth or other celestial bodies **Bathymetric Map**: accurately depicts all of the various depths of a water body
 * GENERAL MAPPING TERMS
 * Mental Map**: Generalized mental image of the physical world
 * Thematic Map**: A thematic map displays spatial pattern of a theme or series of attributes ||  ||
 * Topographic Map**: a map showing topographic (physical) features, usually by means of contour lines.
 * Contour Lines**: a line joining points of equal elevation on a surface.
 * Hemisphere**: half of the terrestrial globe or celestial sphere, esp. one of the halves into which the earth is divided
 * Map Projection**: a systematic construction of lines drawn on a plane surface representative of and corresponding to the meridians and parallels of the curved surface of the earth or celestial sphere.
 * Scale**: a ratio of the distance between two points on a map and the Earth’s distance between the same two points.
 * Small Scale**: Comparative term for a map in which a generalized representation of a relatively large area of the Earth’s surface is shown in a relatively small space.
 * Large Scale**: Comparative term for map scale in which a relatively small area of the earth’s surface is represented in considerable detail
 * Legend**: explanatory table of symbols used on a map or chart
 * Compass**: an instrument for determining directions, as by means of a freely rotating magnetized needle that indicates magnetic north.
 * Cardinal Directions**: one of the four principal compass points north, south, east, and west
 * Compass Rose**: a circle divided into 32 points or 360° numbered clockwise from true or magnetic north, printed on a chart or the like as a means of determining the course of a vessel or aircraft.
 * Latitude**: the angular distance north or south from the equator of a point on the earth's surface, measured on the meridian of the point.
 * Longitude**: angular measurement of east-west location, relative to the prime meridian
 * Prime Meridian**: The zero meridian (0°), used as a reference line from which longitude east and west is measured. It passes through Greenwich, England.
 * International Date Line**: Internationally accepted line, located near the 180th meridian, where one day ends and another day begins. Deviates from the meridian to avoid the occurrence of two different days of the week in a single nation
 * Equator**: The imaginary great circle around the earth's surface, equidistant from the poles and perpendicular to the earth's axis of rotation. It divides the earth into the Northern Hemisphere and the Southern Hemisphere.
 * True North**: the direction of the north pole from a given point
 * Grid**: a basic system of reference lines for a region, consisting of straight lines intersecting at right angles.
 * Coordinate**: a number that identifies a position relative to an axis
 * Grid North**: Grid north is a navigational term referring to the direction northwards along the grid lines of a map projection
 * Magnetic Declination**: difference between true north and magnetic north at any given location
 * Magnetic North**: direction to the north magnetic pole
 * GPS**: Global Positioning System, worldwide positioning system based on a constellation of 24 satellites operated by the US Department of Defense. Makes accurate poition determination possible 24 hours a day, in any weather
 * GIS**: Geographic Information System, spatial information system designed for data management, mapping, and analysis

watch all videos to learn more about mapping and its uses** [|Why Maps are Useful] [|Using Maps to Navigate] [|Types of Maps] [|Parts of a Map] [|Scale] ||
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