Geology Lab Manual 1610 UNT Chapter 6 Maps and Air Photos
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13 Terms
Define Air Photos. Also known as Topographic maps
show landforms and developments at the earths surface form a bird eyes view.
Define Lineaments
Linear features in terrain that reflect underlying fractures
Define Stereoscopes
special glasses that make the image appear three-dimensional
Define Contour lines
connecting points of equal intervals.
Define Contour interval
the distance between lines on a map
Define Scale
indicates how measurements on the map correspond to the real world
Define Fractional Scale
Ex: 1:24,000 = is an inch
Define Graphical Scale
distance along a bar
Define Verbal Scales
express scales in words Ex: "1 inch equals 1,000 feet"
Define Topographical profile
side view of the land surface that can be constructed from a topographical map
Define Anaglyphs
Provides a means to study contour maps and other imagery in three dimensions when viewed with color glasses
Define Index Contours
heavier contour lines labeled with an elevation
Define Depression Contours
hachure marks on the downhill side and represent a closed depression
