Question

What do you understand by contour lines? Which are its two special ones? Draw.

Answer 1

Position of Relief with contour lines is best method. This is a standard method which is considered the best. In fact imaginary lines joining places of equal height above sea level are called contour lines. These lines are drawn on the basis of actual survey conducted in the area. The value of its height is written along each contour line in the map. On the map, these lines are shown in brown colour. Two characteristics are

• The contour line quantity 40 always starts from and the difference between them is always the same
• If the contour lines are close together, the slope on the surface will be sharp and if the contour lines are far apart, the slope on the surface will be slow.