Question

How does the spacing of the contour lines show the difference between gentle and steep slopes?

Answer 1

Where slopes are steep, contour lines are closely spaced.

The slope is determined by the distance between contour lines; the greater the distance, the softer the slope.

What is contour line?

• A contour line of a two-variable function is a curve that connects points of equal value and along which the function has a constant value.
• It is a portion of the plane in the three-dimensional graph of the function f.
• On a map, you'll notice three different types of contour lines: supplemental, index, and intermediate. The thickest contour lines are called index lines, and they are typically numbered at some point along their length.
• There are numerous types of landforms on the surface of the earth, and they range greatly in height and elevation.
• The elevations of these surface features are depicted on contour maps, allowing you to view a two-dimensional map and imagine the Earth in three dimensions.

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