The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and...
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![Page 1: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/1.jpg)
RULES ofContour Mapping
![Page 2: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/2.jpg)
TOPOGRAPHY• The study of the shapes and features
of the Earth’s surface.
TOPOGRAPHIC MAPS• Map showing 3-dimensional
shape and elevation of land in 2-dimensions
ELEVATION• Height above sea level
![Page 3: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/3.jpg)
• All points on the same contour line have the same elevation.
#1. A contour line represents a single equal elevation.
A
B
DC
![Page 4: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/4.jpg)
Commonly, every 5th line is darker and the elevation shown. This is the index contour.
![Page 5: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/5.jpg)
#2. Where one closed contour line surrounds another,the inner contour line represents the higher elevation .
![Page 6: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/6.jpg)
This is a contour map of a mountain.
![Page 7: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/7.jpg)
#3. Elevation is determined by the contour line interval.
Question:What is the contour line interval here?
![Page 8: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/8.jpg)
#4.Closely spaced contour lines =steep slope.
Widely spaced contour lines =gentle slope.
![Page 9: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/9.jpg)
![Page 10: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/10.jpg)
#5. Where a contour line crosses a stream or river, the contour line bends to form a “V” that points upstream.This is called the Rule of V’s
![Page 11: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/11.jpg)
In what direction is the river flowing?
![Page 12: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/12.jpg)
#6. Depressions are shown using hachure contour lines
![Page 13: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/13.jpg)
The hachures point into the depression. (Hachures = short dashes)
![Page 14: The study of the shapes and features of the Earth’s surface. Map showing 3-dimensional shape and elevation of land in 2- dimensions Height above sea level.](https://reader035.fdocuments.in/reader035/viewer/2022081512/56649d1c5503460f949f199d/html5/thumbnails/14.jpg)
A hachured contour line, lying between two different contour lines, is the same elevation as the lower contour line.
Count up Count down
Contour Elevation Repeats