If no one has ever visited the core of the Earth,how do we know that it is make...

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kristine z

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...of metals? A. core material seeps up through volcanoes in the crust
B. you can’t fool me; there is no evidence that the Earth’s core has metals.
C. spectroscopy allows us to tell what the core is made of by analyzing the light we see from it
D. the amount of radioactivity shows metals must be present; only metals are radioactive
E.circulating liquid metals in the core set up a large (measurable) magnetic field
 
A, D, and E. Also, the mean density of the Earth is consistent with it being made mostly of iron.
 
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