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| difference in elevation between 2 consecutive contour lines |
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| Lines on a topographic map showing elevation of land above or below sea level; all points by a line having the same elevation |
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| imaginary line dividing Earth's surface into Northern and Southern Hemispheres; 0 latitude |
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| computer assigns specific colors to different wavelenghts of reflected light from a distant object;used by satelite of Earth from space |
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| equal division of the Earth's surface into northern and southern halves; eastern and western halves |
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| east-west lines parallel to the equator used to measure distance north and south of the equator |
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| north-south lines running between the poles used to measure distance east and west of the prime meridian |
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| angle by which the compass needle varies from true North; magnetic variation |
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| flat 2-dimensional representation of Earth's surface and features |
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| on a map, comparison of distance units used with actual distances of Earth surface; can be expressed as a ratio, fraction, or in a scale bar |
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| Imaginary line dividing Earth's surface into Eastern and Western Hemispheres, established at Greenwich, England |
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| representation of the spherical Earth on the flat plane of a map |
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| method of detecting distant objects and recording their features and properties by analysis of electromagnetic waves reflected from their surfaces |
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| steepness of a landscape, calculated as the change in elevation divided by the distance covered |
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| a map that uses contour lines and symbols to show the surface features of a particular area, including natural features like mountains, valleys, bodies of water, as well as human-made features like bridges, buildings and roads |
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| the natural and human-made surface features of a particular area |
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