How do we know that Mercury contains a higher percentage of iron than does the Earth?
A)The reddish color of its surface rocks indicates iron oxides
B)Its surface is very smooth and shiny
C)There are traces of gaseous iron in its atmosphere
D)Although it is smaller than Earth,its density is about the same

Question

Quizplus · Accepted Answer

Mercury's density is about the same as that of Earth, suggesting that it has a higher percentage of heavy elements such as iron in its composition. The other options do not provide direct evidence for the higher percentage of iron in Mercury.

How Do We Know That Mercury Contains a Higher Percentage