SOLAR SYSTEM

Detailed explanation-1: -Contour lines that are very close together indicate a steep slope. The figure above illustrates various topographic features. (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines.

Detailed explanation-2: -Contour lines, sometimes called “level lines, ‘’ join points of equal elevation. The closer together the contour lines appear on a topographic map, the steeper the slope (assuming constant contour intervals).

Detailed explanation-3: -The steeper the slope, the closer together the contour lines rendering that slope. Because maps are factual, they can never distort the truth.

Detailed explanation-4: -Steep slopes are legally defined as hillsides having a 15 foot, or greater, vertical rise over 100 feet of horizontal run, or 15% slope (Figure 1).

Detailed explanation-5: -Lines represent contours. Closely spaced contour lines indicate steep slopes. Widely spaced contour lines indicate gentle slopes or relatively flat areas.

Detailed explanation-6: -A “steep slope” is a slope with an incline of 40 percent or more (10 feet of vertical rise over a horizontal distance of 25 feet or less) with a height of at least 10 feet.