Question

which phrase identifies the standard difference in elevation on a topography map?
○ index contour
○ contour interval
○ scale bar
○ topographic symbol

Explanation:

• Index contour: A bolded contour line labeled with elevation, not the elevation difference.
• Contour interval: Defined as the fixed vertical elevation difference between adjacent contour lines on a topographic map.
• Scale bar: Shows horizontal distance on the map, not elevation difference.
• Topographic symbol: Represents real-world features like rivers or trees, not elevation difference.

Answer:

B. contour interval