GEOLOGY

Detailed explanation-1: -In hilly areas, the contour lines are close together while they are wider apart on flat slopes. The closer the contour lines, the steeper the slope. The wider the contour lines, the flatter the slopes.

Detailed explanation-2: -Widely separated contour lines indicate a gentle slope. Contour lines that are very close together indicate a steep slope.

Detailed explanation-3: -In contouring, when there is less distance between the contour lines, the slope is steep. If the distance between the contour lines is great, the slope is gentle.

Detailed explanation-4: -Contour lines that are sharply tapered indicate an uphill direction. Rounded contour lines typically indicate a downhill direction (gradual slope).

Detailed explanation-5: -Measuring slopes on a contour map:-Slope = “rise over run", or vertical height increase over horizontal distance.-Example: if two contour lines are 300 m apart (use map scale to find the distance between them!) and they represent elevations 50 m apart, then rise = 50 m, run = 300 m. Slope = 50/300.