Explanation:
Almost all maps have these four things:
scale, legend, title, and compass
Definition of contour line:
a line on a map "joining point"s of equal height "above or below sea level".
The thin brown lines snaking around a topographic map are called contour lines.
Uses:
Contour lines are used to "determine elevations "
Elevation refers to "height in feet, or meters, above sea level"
3 types of contour lines:
intermediate, index, and supplementary.