Surface elevations for Earth, Venus and Mars

Surface elevations for Earth, Venus and Mars

Fig. 7.11 . Most places on Earth (center) stand near one of two prevailing levels, the high-standing continents or the low-lying ocean floors. In contrast, the surface of Venus (right) is unusually smooth and flat; about 60 percent of its terrain lies within 500 meters of the mean planetary radius of 6,051.9 kilometers. A small percentage of its terrain consists of elevated highlands that are comparable in height to many continents on Earth. The surface features on Mars (left) are spread over a broader range of elevation than most of those on Venus; but the Martian surface elevations are not double-peaked as on Earth.

Copyright 2010, Professor Kenneth R. Lang, Tufts University