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UPCAT Science practice question 41: Which layer of the Earth consists mainly of liquid iron and nickel?

Correct answer

D. Outer core

The outer core is molten iron and nickel, and its motion generates the Earth's magnetic field. The inner core is solid despite being hotter, because of immense pressure.

Which layer of the Earth consists mainly of liquid iron and nickel?

  1. Crust
  2. Mantle
  3. Inner core
  4. Outer coreCorrect

Why D is correct

The outer core is molten iron and nickel, and its motion generates the Earth's magnetic field. The inner core is solid despite being hotter, because of immense pressure.

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