Question

Scientists believe that the inner core of the Earth is A) a rocky solid, composed of iron and magnesium-rich silicates. B) liquid, comprising molten iron. C) a metallic solid, composed of nickel. D) solid metal, composed of mostly iron. E) a molten alloy of iron and nickel.

Answer 1

The inner core of the Earth is a solid metal composed mostly of iron. So the correct answer is Option D.

Step-by-step explanation:

The inner core of the Earth is a solid metal, composed mostly of iron. It is estimated to have a radius of about 1,220 kilometers and is surrounded by the liquid outer core. The inner core is primarily composed of iron, with some nickel and a smaller amount of other elements.

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