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15 Cards in this Set
- Front
- Back
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Aerial photograph
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a picture taken from an elevated platform, such as a balloon, airplane, rocket or satellite (earliest in France in 1858 from balloon)
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Central Meridian
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are meridians that pass through the center of each major landmass and serve as a baseline from which continent can be mapped
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Color Infrared (Color IR)
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a development of WWII - this film is sensitive to radiation in the infrared region of the spectrum; can discriminate living vegetation from withering vegetation used to hide objects during war; blue is filtered out
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Conformal Projection
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proper angular relationships are maintained so that the shape of something on the map is the same as its shape on Earth
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Contour Line
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a line that joins points of equal elevation
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Equivalent Projection
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the size ratio of any area on the map to the corresponding area on the ground is the same all over the map (size is accurate)
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Fractional Scale
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compares map distance with ground distance by proportional numbers expressed as a fraction or ratio called a representative fraction
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Geographic Information System (GIS)
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automated systems for the capture, storage, retrieval, analysis and display of spatial data; map layers can be used to compare different things such as geology or slopes, soils or locations of rivers, etc.
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Global Positioning System (GPS)
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a satellite-based system for determining accurate positions on or near Earth's surface, developed in '70s and '80s for guiding missiles, navigating aircraft and controlling ground troops - 24 satellites so that four are in view of any area at any given time
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Graphic Scale
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uses a line marked off in graduated distances
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Interval
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the numerical difference between one isoline and the next
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Isobar
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a line joining points of equal atmospheric pressure
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Isogonic Line
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a line that joins points of equal magnetic declination
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Isohyet
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a line that joins points of equal quantities of precipitation
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Isoline
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a generic term that refers to any line that joins points of equal value of something
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