Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.
What are the four main features of a topographic map?
Topographic maps show contours, elevation, forest cover, marsh, pipelines, power transmission lines, buildings and various types of boundary lines such as international, provincial and administrative, and many others.
What are the 5 rules of a topographic map?
- Contour Lines Never Cross. ...
- Measuring Steepness.
- Stream Flow Direction.
- Contours Close.
- Concentric Circles.
- Elevation Between Lines.
What 4 pieces of information does a topographic map show you?
Map Scales
Ground area, rivers, lakes, roads, distances between features , and so on must be shown proportionately smaller than they really are. Map Scales; 2002; FS; 015-02; Geological Survey (U.S.)
What are the 6 rules for topographic maps?
- Rule 1: Slope. The closer the lines are, the steeper the slope. ...
- Rule 2: Flow and Source of a River/Stream. ...
- Rule 3: Mountains and Hills. ...
- Rule 4: Highest possible elevation of a hill/mountain. ...
- Rule 5: Depressions. ...
- Rule 6: Lowest possible elevation of a depression.
What is Rule #4 when reading a topographic map?
Rule 4 – every 5th contour line is darker in color . This is an INDEX contour line. Rule 5 – Contour lines are closer together in steep terrain and farther apart in flat areas.
What are the 5 Rules of contour lines?
Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color .
What are the elements of a topographic map?
Topographic maps show contours, elevation, forest cover, marsh, pipelines, power transmission lines, buildings and various types of boundary lines such as international , provincial and administrative, and many others.
What are the features of topographic map?
It is often considered to include the graphic representation of the landform on a map by a variety of techniques, including contour lines, hypsometric tints, and relief shading ., Topography is the study of the forms and features of land surfaces.
What are topographic features?
Topography describes the physical features of an area of land . These features typically include natural formations such as mountains, rivers, lakes, and valleys. Manmade features such as roads, dams, and cities may also be included. Topography often records the various elevations of an area using a topographical map.
What are the steps for reading a topo map?
- UNDERSTAND THE CONTOUR LINES. Contour lines are the most important characteristic of topographic maps. ...
- KNOW THE FEATURES. Besides contour lines, you’ll find many other features on a topographic map. ...
- LEARN WHAT THE COLORS REPRESENT. ...
- KNOW THE SCALE OF THE MAP. ...
- FIND NORTH.
How do topography maps work?
Topographic maps use a combination of colors, shading and contour lines to represent changes in elevation and terrain shape . Essentially, topographic maps represent the three-dimensional landscape of Earth within the two-dimensional space of a map.
What are the three main types of topography?
- Karst Topography. Karst topography describes the distinct landscape that is made when underlying rocks dissolve or change shape. ...
- Mountain Topography. Topographical maps show landforms such as hills and mountains. ...
- Vegetation, Elevation and Glaciers.
What are topographic symbols?
A topographic map shows more than contours. The map includes symbols that represent such fea- tures as streets, buildings, streams, and vegetation . These symbols are con- stantly refined to better relate to the features they represent, improve the appearance or readability of the map, or reduce production cost.
What are the types of contour lines?
A. Contour lines are of three different kinds. They are the Index lines, Intermediate lines and the Supplementary lines .
What are contour lines on a map?
A contour line is a line drawn on a topographic map to indicate ground elevation or depression . A contour interval is the vertical distance or difference in elevation between contour lines.
