Q173
The Earth's core is made up of very heavy material mostly constituted by:
A.
Iron and Aluminum
B.
Aluminum and Nickel
C.
Nickel and Iron
AnswerD.
Nickel and Lead
Answer: Option C
Solution
Answer: Option C
Solution:
The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy.