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symbo symbo
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7 years ago
The density of Mercury is about the same as that of the Earth, but Mercury contains a larger proportion of iron.  How is this possible?
A)   The iron in Mercury's core is accompanied by a very low-density crust.  The average density is thus comparable to the density of the Earth.
B)   The inner core of Mercury is hollow, thus reducing the overall density much below that of iron.
C)   Mercury has only 1/18 the Earth's mass.  Thus, it must be composed of heavier materials (like iron) in order to match the Earth's density.
D)   The Earth contains, proportionally, a smaller volume of iron, but because of Earth's greater mass, this iron has been compressed to a higher density than the iron on Mercury.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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