UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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outer core
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inner core
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mantle
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crust
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Detailed explanation-1: -The crust of the Earth has some permanent magnetization, and the Earth’s core generates its own magnetic field, sustaining the main part of the field we measure at the surface.
Detailed explanation-2: -The outer core, about 2, 200 kilometers (1, 367 miles) thick, is mostly composed of liquid iron and nickel. The NiFe alloy of the outer core is very hot, between 4, 500° and 5, 500° Celsius (8, 132° and 9, 932° Fahrenheit).
Detailed explanation-3: -Earth has a strong magnetic field (SF Fig. 7.6) with magnetic poles. Earth’s magnetic field originates it its core, which is primarily made of the magnetic material iron. Earth’s magnetic field is generated and maintained by the fluid outer core moving around the solid inner core to induce electric currents.
Detailed explanation-4: -The Earth’s magnetic field is produced by the core, the Earth’s innermost layer.