What is an intermediate contour line?

What is an intermediate contour line?

The contour lines falling between the index contour lines are called intermediate contour lines. These lines are finer and do not have their elevations given. There are normally four intermediate contour lines between index contour lines.

What are the five types of contour lines?

There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary.

• Index lines are the thickest contour lines and are usually labeled with a number at one point along the line.
• Intermediate lines are the thinner, more common, lines between the index lines.

What’s the difference between two contour lines?

The elevation difference between two adjacent contour lines is called the contour interval (CI). Usually the contour interval is noted on the map legend. In most topographic maps every 5th contour line is drawn in bold print or wider than other contours. Such lines are called index contour lines.

What are the properties of contour lines?

Characteristics of Contours

• 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.

How long is a contour line 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. You can see from the picture above the link between the shape of a hill and the contours representing it on a map.

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 are the different types of contour lines?

Let’s dig deeper. There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary. 1. 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.

How are contour lines used to show hills?

How contour lines show a pair of small hills. You can see from the picture above the link between the shape of a hill and the contours representing it on a map. Another way of thinking about contour lines is as a tide mark left by the sea as the tide goes out, leaving a line every 5 metres.