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25 Cards in this Set
- Front
- Back
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Meter
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the fundamental unit of length in the metric system, equivalent to 39.37 U.S. inches, originally intended to be, and being very nearly, equal to one ten-millionth of the distance from the equator to the pole measured on a meridian: defined from 1889 to 1960 as the distance between two lines on a platinum-iridium bar (the “International Prototype Meter”) preserved at the International Bureau of Weights and Measures near Paris; from 1960 to 1983 defined as 1,650,763.73 wavelengths of the orange-red radiation of krypton 86 under specified conditions; and now defined as 1 / 299,792,458 of the distance light travels in a vacuum in one second. Abbreviation: m
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Volume
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the amount of space, measured in cubic units, that an object or substance occupies.
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Mass
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a body of coherent matter, usually of indefinite shape and often of considerable size
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Temperature
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a measure of the warmth or coldness of an object or substance with reference to some standard value. The temperature of two systems is the same when the systems are in thermal equilibrium.
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Area
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any particular extent of space or surface; part: the dark areas in the painting
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Density
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mass per unit volume
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Map
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a representation, usually on a flat surface, as of the features of an area of the earth or a portion of the heavens, showing them in their respective forms, sizes, and relationships according to some convention of representation
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True North
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Compare magnetic north Also called: geographic north the direction from any point along a meridian towards the North Pole
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Magnetic declination
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Also called: magnetic variation the angle that a compass needle makes with the direction of the geographical north pole at any given point on the earth's surface
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Latitude
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the angular distance north or south from the equator of a point on the earth's surface, measured on the meridian of the point
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Equator
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the great circle of the earth that is equidistant from the North Pole and South Pole
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Longitude
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angular distance east or west on the earth's surface, measured by the angle contained between the meridian of a particular place and some prime meridian, as that of Greenwich, England, and expressed either in degrees or by some corresponding difference in time
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Prime meridian
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the meridian running through Greenwich, England, from which longitude east and west is reckoned
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Cylindrical projection
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Pronunciation Key
A map projection in which the surface features of a globe are depicted as if projected onto a cylinder typically positioned with the globe centered horizontally inside the cylinder |
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Conic projection
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a map projection based on the concept of projecting the earth's surface on a conical surface, which is then unrolled to a plane surface
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Azimuthal projection
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another term for zenithal projection
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Remote sensing
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the science of gathering data on an object or area from a considerable distance, as with radar or infrared photography, to observe the earth or a heavenly body.
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Global Positioning System / (GPS)
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Global Positioning System: a global system of U.S. navigational satellites developed to provide precise positional and velocity data and global time synchronization for air, sea, and land travel
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Geographic Information System / (GiS)
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A computer application used to store, view, and analyze geographical information, especially maps
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Topographic map
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a map showing topographic features, usually by means of contour lines
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Elevation
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the height to which something is elevated or to which it rises
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Contour line
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a line joining points of equal elevation on a surface
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Contour interval
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the difference in elevation represented by each contour line on a topographic map
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Relief
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the rescue of a besieged town, fort, etc., from an attacking force
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Index contour
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A thicker line that has numbers written on it showing the rising or decreasing elevation on a topographic map
Read more: http://wiki.answers.com/Q/What_is_an_index_contour#ixzz25ymCfaOS |
