Topography Flashcards
Can be defined as the shape, configuration, roughness, or three-dimensional quality of the Earth’s surface.
Topography
Are made to show information, together with the location of artificial and natural features of the Earth including buildings, highways, streams, lakes, forests, and so on.
Topographic Maps
Provides definite and precise information regarding elevation..
Spot Heights
Are heights of places surveyed and they denote the actual height above mean sea level. They are shown on a map as dots with their respective values written beside it.
Spot Heights
Are series of short lines drawn in the direction of the slope. They only provide a general impression of the configuration of the ground, they don’t provide the actual elevation of the ground surface.
Hachures
For steep slopes, lines are ______; and for gentle slopes, they are fined and widely spaced.
Heavy and Closely Spaced.
Are drawn when not enough vertical control is available or when the surface is too irregular or intricate contour. They are usually represented as dashed lines and do not portray any actual elevations. They are used to show the shapes of the terrain rather than relief.
Form Lines
Shown on maps as the traces of level surfaces of different elevations.
Contours or Isohypses
A common use for aerial navigation charts and small-scale maps of the world.
Layer Tinting System
Used in conjunction with contour lines give a pictorial effect by accentuating the areas of different elevations.
Color Tints
An old method used to show relative elevations on maps. It is accomplished by correct placement on the map of different shades of gray tints. It is dependent upon the shadow cast by the elevated portions of the land.
Shading
Provides the most striking and realistic expression of topography. They are made from wax, clay plastic, cardboard, or other materials and shaped to agree with the actual terrain.
Relief or Terrain Models
It is widely used as a teaching aid in geography and geology courses and also used in public exhibits.
Relief or Terrain Models
The universal method to show the relief.
Contour
The general unit of measurement of contour.
Meters above sea-level
A low circle-shaped hill on the end of a spur.
Knoll
Contours that for a V or U shape pointing away from higher land.
Spur
Contours that are close together.
Steep Slope
Contours that are widely spaced.
Gentle Slope
Contours that are VERY widely spaced.
Flat Land
Contours that are in a circle or oval shape.
Round Hill
A large generally level, elevated area
Plateau
Sudden drop in height at the edge of a plateau.
Escarpment