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Which option correctly matches Earth layer with major material?

Answer and explanation

Correct answer: Core — iron and nickel

Earth’s core is considered to consist mainly of iron and nickel, so it is often called NIFE (Ni + Fe). Both the outer and inner core are dominated by iron and nickel, though the outer core is liquid. Silica and alumina are associated mainly with the SIAL part of the crust, not with the outer core. Exam tip: remember NIFE for the core and SIAL for the continental crust.

Related tags

Earth InteriorEarth LayersCoreNifeIron And NickelCrust CompositionInterior Structure Of The EarthInterior Of The Earth

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