What do close contour lines indicate?

What do close contour lines indicate?

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.

How close the contour lines are is an indication of an area’s What?

steep slope
Spacing of contours: close contours indicate a steep slope; distant contours a shallow slope. Two or more contour lines merging indicates a cliff.

What do lines on a contour map indicate?

contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. The diagram illustrates how contour lines show relief by joining points of equal elevation.

When contour lines are close together on a topographic map that means the area is steep?

If contour lines are close together, it is a very steep slope; if they are far apart, it is a gradual slope.

Why contour lines are spaced close together on a steep slope?

Each contour line represents a specific elevation and connects all the points that have that elevation. The map legend gives the contour interval. Closely-spaced contour lines indicate a steep slope. They show that the elevation changes quickly over a short horizontal distance.

What do very close elevation contours signify on a topographic map?

Con- tours that are very close together represent steep slopes. Widely spaced contours or an absence of contours means that the ground slope is relatively level. The elevation difference between adjacent contour lines, called the contour interval, is selected to best show the general shape of the terrain.

How far apart are contour lines on a map?

A contour is a line drawn on a map that joins points of equal height above sea level. For 1:25 000 scale maps the interval between contours is usually 5 metres, although in mountainous regions it may be 10 metres.

Are contours always closed?

Contours are closed because infinite gradients are vanishingly rare (or even impossible) in real cases.