Mercury Is Unique Among the Inner Planets in Having

question 183

Multiple Choice

Mercury is unique among the inner planets in having

• A) one hemisphere with many craters and few volcanoes and the other hemisphere with few craters and many volcanoes.
• B) extensive volcanic activity and crustal deformation over most of its history but no evidence of plate tectonics.
• C) no evidence of an iron core.
• D) an iron core that occupies almost half its volume.