Any point outside a contour line is a elevation than the contour line. higher lower deeper longer

The correct answer is - higher.

Any point on the maps that is outside of the contour line itself, is a point that marks higher elevation than the elevation of the contour line.

The points on the maps are actually representing the peaks, be it of mountains, higher or smaller hills. Because they are almost always not on pair with the elevation distance between the contour lines, they are marked with a point, usually with black color.

mercury

explanation:

mercury is the least dense because of its size