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26 Cards in this Set
- Front
- Back
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remote sensing
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process of gathering data about Earth from far above the planet's surface
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equator
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imaginary line that lies at 0 degrees latitude and circles Earth midway between the north and south poles, dividing Earth into the northern hemisphere and the southern hemisphere
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contour line
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a line on a topographic map the connects points of equal elevation
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gnomonic projection
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map useful in plotting long-distance trips by boat or plane that is made by projecting points and lines from a glove onto a piece of paper that touches the glove at a single point
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Global Positioning System (GPS)
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satelitte-based novigation system that permits a user to pinpoint his or her exact location on Earth
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map legend
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key that explains what the symbols on a map represent
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longitude
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distance in degres east and west of the prime meriidan
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latitude
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distance in degrees north and south of the equator
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Landsat satellite
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information-gathering satellite that uses visible light and infrared radiation to map Earth's surface
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International Date Line
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The 180 degree meridian, which serves as the transition line for calendar days
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sonar
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use of sound waves to detect and measure objects underwater
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prime meridian
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imaginary line representing 0 degrees longitude, running from the north pole to the south pole
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Mercator projection
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map with parallel lines of latitude and longitude that shows true direction and the correct shapes of land masses but distrots area near the poles
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map scale
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ratio between the distances shown on a map and the actual distances on Earth's surface
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contour interval
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difference in elevation between two side-by-side contour lines on a topographic map
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conic projection
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map is highly accurate for small areas, made by projecting points and lines from a globe onto a cone
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cartography
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science of mapmaking
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cultural features
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symbols on the map representing man-mad structures
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map projection
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a way of transferring the features of the earth ionto a flat surface
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elevation
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height above sea level
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topography
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a description of surface features of an area, including elevation
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average slope
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Rise over run, elevation over distance
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benchmark
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brass plate with elevation at a specific point on a map
"spot elevation" |
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profile
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sideways view or x-section
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topographic map
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a map showing elevation changes with contour lines, symbols and colorsea
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sea level
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level of ocean's surfaces
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