Question

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

Explanation:

• An index contour is a darker or wider contour line that is labeled with its elevation.
• A contour interval is the vertical distance or difference in elevation between contour lines.
• A scale bar shows the relationship between distance on the map and actual ground distance.
• A topographic symbol represents features on the ground, like buildings or roads.

Answer:

contour interval