THE EARTH
INTERNAL STRUCTURE OF EARTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Iron and Magnesium
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Iron and Nickel
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Silicon and Iron
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None of these
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Detailed explanation-1: -Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal-specifically, iron and nickel. The shorthand used for the core’s iron-nickel alloys is simply the elements’ chemical symbols-NiFe. Elements that dissolve in iron, called siderophiles, are also found in the core.
Detailed explanation-2: -Earth’s outer core is a fluid layer about 2, 260 km (1, 400 mi) thick, composed of mostly iron and nickel that lies above Earth’s solid inner core and below its mantle.
Detailed explanation-3: -Iron, nickel, and other heavy metals like gold, are what makes up the core of the earth because they are the heaviest of the metals and so sank toward the center of the earth.
Detailed explanation-4: -5 In the center of Earth is the core, consisting of two layers: the inner and outer core. The entire iron and nickel core is extremely hot, so it is not surprising to learn that the outer core is in a molten state. However, the inner core’s iron and nickel are solid.