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Topographic Maps
Review of Vocabulary for Topographic Maps
| Term | Definition |
|---|---|
| Topographic Maps | A map that indicates the features of the land's surface, such as mountains, hills, and valleys. |
| Erosional Feature | A land surface shaped by the action of erosion, especially by running water. |
| Weathering | The process of wearing or being worn by long exposure to the atmosphere. |
| Satellite Image | Images of Earth collected by imaging satellites operated by governments |
| Elevation | Height above a given level, especially sea level. |
| Elevation Change | The difference between the original elevation and a secondary elevation. |
| Erosion | The process of eroding or being eroded by wind, water, or other natural agents. |
| Contour Interval | The difference in elevation represented by each contour line on a topographic map. |
| Crater | A large, bowl-shaped cavity in the ground or on the surface of a planet or the moon, typically one caused by an explosion or the impact of a meteorite or other celestial body. |
| Bench Mark | A point where exact elevation is known and is marked with a brass or aluminum plate. |
| Contour Lines | Lines connecting places that are the same height above sea level. Numbers on the lines give the height in feet. (Sea level is zero.) Lines drawn closely together indicate that a slope is steep. |
| Depression | A landform sunken or depressed below the surrounding area. |
| River Valley | An elongated low area often running between hills or mountains, which will typically contain a river or stream running from one end to the other. |
| Hachure Marks | One of a series of short, straight, evenly spaced, parallel lines used on a topographic map for shading and for indicating surfaces in relief (such as steepness of slopes), drawn perpendicular to the contour lines. |
| River Valley Contour Lines | An elongated depression in the landscape that is formed by the action of water (V-shaped) or carved out by glaciers (U-shaped). Valley bottoms are represented by "U" or "V" shaped contour lines with their closed end pointing towards higher elevation. |
| Index Contour Lines | Bold or thicker lines that appear at every fifth contour line. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. |
| Slope | A slope is the rise or fall of the land surface |
Created by:
klstorie
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