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27 Cards in this Set
- Front
- Back
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parallels
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positions north and south of e equator. Thye are circles that run east nd west around the worls parallel to the equator
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latitude
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the angual distance north and south of the equator
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Meridians
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are used toestablish east-west locations
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Prime meridian
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passes through Greenwich, England, is one of the meridian that is 0 degress.
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Longitude
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the angular distance, measured in the degrees, east or west of the prime meridian.
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great circle
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is any circle that divides the globe into halves.
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geomagnetic poles
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the points on the earth's surface just above te poes of the imaginary magnet
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magnetic declination
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the angle between the direction of the geographic pole and the direction in which the compass needle points
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true north
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the direction of the geographic North Pole
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cartography
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the science of the map
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map projection
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a flat map that represents the three-dimensional curved surface of a globe
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Mercator projection
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map projection in which the meridians appear as striaght, parellel, evenly spaced lines and form a grid with the parallels, whih appear as stright, parallel, and unevenly spaced lines
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gnomonic projection
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map projectio in which the parallels appear as unevenly spaced, concentric circles, the meridians appear stright lines radiating from a central point, and all other great circles appear as straight lines
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conic projection
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map projection in which the meridians converge at the poles; parallels appear as equally spaced, concentric curves.
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polyconic porjections
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fitting the adjoining areas together then producesa continous map. This is what th maps made this wa are called.
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legend (explanaton)
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a list of symbols and their meaning
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scale
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it indicates the relationship between distance as shown the map and actual distance
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topographic map
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a useful map in earth science
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topography
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surface features
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elevation
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hieght above sea level
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mean sea level
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the point midway between the highest and lowest tide levels of the ocean
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contour lines
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used to show elevation
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contour interval
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the difference in elevation between one contour line and the next
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relief
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the difference in elevation between the highest and lowest points of the area being mapped
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topographic, sheets,and quadrangles
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are details maps
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index contour
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is every fifth contour line is printed bloder than other
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depression contours
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are the lines that indicate the depression
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