When contour lines are very close together on a topographic map the land will?
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.
What do contour lines drawn close to each other indicate?
Spacing of contours: close contours indicate a steep slope; distant contours a shallow slope. Two or more contour lines merging indicates a cliff.
Why contour lines are closer together on steep slopes?
Contour lines are used in a map to portray differences in elevation. When contour lines are closer together on a map, they indicate a steep slope. Each number represents a different elevation, the higher the number, the higher the elevation (duh) and vice versa.
What does it mean when isolines are spaced farther apart?
When isolines are close together – they show a rapid horizontal change. When isolines are far apart – they show a gradual horizontal change. Only $47.88/year.
What do dotted contour lines on a map indicate?
Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. Intermediate lines are the thinner, more common, lines between the index lines. They usually don’t have a number label. Supplementary lines appear as dotted lines, indicating flatter terrain.
What are the lines on a topographic map called?
The thin brown lines snaking around a topographic map are called contour lines. All points along the same contour line are at the same elevation above sea level. Think of a contour line as a closed loop.
What is the distance between contour lines?
The distance between contour lines represents a change in elevation. Many maps are in either a 1:24 000 scale (in the US) or a 1: 25 000 scale (metric); on these maps, the contour interval is 10 feet. (This can be found along the edge of the map.)
What kind of map uses contour lines to illustrate elevation?
A map with contour lines on it is called a topographic map. 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.