Question

what are contour lines?​

Answer 1

Answer:

a line on a map joining points of equal height above or below sea level.

Explanation:

Answer 2

Contour lines are the points with same elevation above the sea level.

Explanation:

• A contour line is a line on a map which has the same elevation above sea level along its entire length.
• Most maps show only two horizontal dimensions.
• Contour lines are however, an effective device for representing the third dimension on a map.
• Some useful facts regarding contour lines are as follows:-

1. Contour lines bend upstream.
2. Near upper part of hills, contour lines form closures.
3. Contour lines are widely separated  on gentle slopes and closely spaced on steep slopes.
4. Evenly spaced contours indicate a uniform slope.
5. Contour lines generally do not cross each other.