Isolines have all the properties EXCEPT the following:
A) They are always closed loops (the loops sometimes) closing off the map.
B) They may cross each other.
C) The numerical difference between isolines are intervals.
D) Close isolines indicate a steep gradient.
E) They were first used on a map about 300 years ago.

Question

Quizplus · Accepted Answer

Isolines, such as contour lines on a topographic map, represent areas of equal value and therefore cannot cross each other. Each line represents a specific value, and crossing lines would imply a point having two different values simultaneously, which is not possible.

Isolines Have All the Properties EXCEPT the Following