Question

what is the difference in height between two successive countour lines known as

Answer 1

Answer:

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. ... The contour interval of a contour map is the difference in elevation between successive contour lines.

Explanation:

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Answer 2

Answer:

The contour interval of a contour map is the difference in height between two successive contour lines.

so, the answer is The contour interval.