What does it mean when contour lines are close together on a topographic map?
What does it mean when contour lines are close together on a topographic map?
slope
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 do contour lines that are uniformly spaced indicate?
Closely spaced contour lines indicate a steep slope (Figure F-1). 2. Widely spaced contour lines indicate a gentle slope (Figure F-2). Evenly spaced contour lines indicate a uniform slope (Figure F-2), while irregular spacing indicates an irregular slope (Figure F-1).
Why is it unlikely for contour lines to cross?
Contour lines never cross on a topographic map because each line represents the same elevation level of the land.
How do contour lines indicate a stream?
As a rule of thumb, the V-shaped contour is pointing upstream (the opposite direction from the flow of a stream or river). The “V” shape contours indicate streams and drainage. As you can see, the “V” points uphill to a higher elevation.
What 2 types of lines show elevation differences?
Topographic maps have contour lines that connect points of identical elevation above sea level. Contour lines run next to each other. Adjacent contour lines are separated by a constant difference in elevation, usually noted on the map. Topographic maps have a horizontal scale to indicate horizontal distances.
Why is it unlikely that two contour lines will cross?
When the contour lines are widely spaced?
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.
Why don t all topographic maps have the same contour interval?
Contour lines are used to represent elevation on a contour map. Each contour line represents a different elevation, and you can’t have two different elevations at the same point. An example would be how 500 meters above sea level will never be equivalent to 1000 meters above sea level.
Why do the lines on a topographic map never cross How do the lines indicate which side of the mountain is the steepest?
Contour lines can never cross one another. Each line represents a separate elevation, and you can’t have two different elevations at the same point. The closer contour lines are to one another, the steeper the slope is in the real world.
What is the contour interval of the topographic 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. Index contours are bold or thicker lines that appear at every fifth contour line.
How can I turn my topographical view to contour lines?
You can turn their topographic view (complete with contour lines) by selecting the “Terrain” layer from the options menu. Gaia. iPhone users can use Gaia GPS. It is an elegantly designed map program with topographic maps available for download. You can download the maps when you have data or wifi before you venture off-grid.
What do you mean by topographic map and countours?
Topographic Maps and Countours Academic Resource Center Topography: The relief features or configuration of an area. *How do we measure it? Contour Lines •Contour lines, or
How are index contour lines related to elevation?
Index contours are 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. If the numbers associated with the contour lines are decreasing, there is a decrease in elevation.