Closely spaced contour lines indicate steep slopes . Widely spaced contour lines indicate gentle slopes or relatively flat areas. A contour line that forms a closed loop with no other contour lines inside indicates a hilltop. Contour lines form “V” shapes in streams.
What is the shape of contour lines?
When there are evenly spaced contours, the slope is uniform. At a stream junction, contour lines form a “M” or “W” shape . This can be interpreted as two “V-shaped contours intersecting.
What do closely spaced contour lines tell you about the shape of the land?
Contour lines show the 3-dimensional shape of the land (Figure below). ... Closely-spaced contour lines indicate a steep slope , because the elevation changes quickly in a small area. Contour lines that seem to touch indicate a very steep rise, like a cliff or canyon wall.
What do closely spaced contour lines indicate about the ground surface represented on a topographic map quizlet?
What do closely spaced contour lines indicate? They indicate a steep slope .
What does the spacing of contour lines show?
The even spacing indicates the hill has a uniform slope . From the contour map, a profile can be drawn of the terrain. ... Widely separated contour lines indicate a gentle slope. Contour lines that are very close together indicate a steep slope.
What does contour lines are close together mean?
Contour lines that are relatively close together indicate a slope that is fairly steep . Contour lines that are further apart indicates a slope that is relatively flat. The area of the map above boxed in orange shows an area that has a fairly steep slope, while the area boxed in purple is a relatively flat area.
What are Hachure lines?
Hachures are short lines laid down in a pattern to indicate direction of slope . When it became feasible to map rough terrain in more detail, hachuring developed into an artistic speciality....
What are the 3 types of contour lines?
Contour lines are of three different kinds. They are the Index lines, Intermediate lines and the Supplementary lines .
What are the five 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 properties of contour lines?
- Must close on themselves, on or off the map.
- Perpendicular to the direction of max. ...
- Slope between them is assumed uniform.
- The distance between them indicates the steepness of the slope, gentle or steep.
- Irregular signify rough, smooth signify gradual slopes.
When contour lines are close together it represents quizlet?
Look for areas where the contour lines are close together – they indicate a steep area . Look for areas where the contour lines are spread apart – they indicate a gentle slope.
When contour lines are close together they show what type of elevation?
If the lines are close together, it means that the elevation change of 10 feet happens over relatively little linear distance . The closer they are together, the steeper the slope. If the lines are far apart, it means that the elevation change of 10 feet happens over a longer linear distance.
When contour lines are close together does that indicate a steep or gentle slope?
1. Contour lines do not cross each other, divide or split. 2. Closely spaced contour lines represent steep slopes , conversely, contour lines that are spaced far apart represent gentle slopes.
How do you calculate contour lines?
Divide the difference in elevation between the index lines by the number of contour lines from one index line to the next . In the example above, the distance 200 is divided by the number of lines, 5. The contour interval is equal to 200 / 5 = 40, or 40-unit contour intervals.
Why do contour lines never cross?
Contour lines never cross on a topographic map because each line represents the same elevation level of the land .
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.
