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Cartography

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The science and art of map making

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Choropleth

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Maps that represent data using color to show variation

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isoline

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Maps that show data that changes gradually across space such as precipitation, elevation, and temperature.

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graduated symbol

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Data that is represented by graduated or proportional symbol maps representing data with icons varying in size.

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Mercator projection

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This projection shows the latitude and longitudes making it good for travel but distorts area especially in higher latitudes

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Robinson projection

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a compromise map projection showing the poles as lines rather than points and more accurately portraying high latitude lands and water to land ratio

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Absolute Location

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The position or place of a certain item on the surface of the Earth as expressed in degrees, minutes, and seconds of latitude and longitude.

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Relative Location

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The regional position or situation of a place relative to the position of other places.

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GPS

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Satellite-based system for determining the absolute location of places or geographic features.

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Geographic Information Systems (GIS)

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A collection of computer hardware and software that permits spatial data to be collected, recorded, stored, retrieved, manipulated, analyzed, and displayed to the user