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topography
| Question | Answer |
|---|---|
| topography | a detailed description or representation on a map of the natural and artificial features of an area. |
| topographic/contour map | a map that uses special lines called contour lines to show the shape, elevation, and steepness of the Earth's surface. |
| contour lines | imaginary lines on a map that connect points of equal elevation |
| steep slope | often called a high gradient occurs on the map when contour lines are closer together. |
| gentle slope | often called a low gradient occurs on the map when the contour lines are farther apart. |
| index contour lines | a thicker labeled contour line that is normally every 5th line, that helps indicate the elevations on a topographic map. |
| V's at the stream | the "Vs" you see where contour lines cross a stream, known as the Rule of Vs, always point upstream. (point upstream so water is moving down hill) (upstream is the top of the mountain) |
| contour intervals | the vertical distance in elevation between any two consecutive contour lines on a topographic map. |
| map scale | the ratio between the distance on a map and the corresponding distance on the ground it represents. |
| legend | a key or guide that explains the symbols, colors, or patterns used in a map |
| benchmark | a physical marker or a precisely noted location on the map with a known, fixed elevation above sea level. (metal plate on the ground to mark a spot normally on high peaks or overlooks) |
| hachure lines | short lines that intersect the contour lines indicating that there is a depression. |
| elevation | The height above sea-level for a section of land. |
| relief | the general shape of the Earth's surface, including variations in elevation like hills, valleys, and mountains (high relief=steep low relief=flat landscape) On a map it is the total difference in elevation between the lowest and highest points. |
| profile | the cross-sectional view of a section of land showing the changes in elevation. |