Multiple choice

Which of the following layers is liquid?

  1. mantle

  2. inner core

  3. outer core

  4. crust
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Earth's outer core is composed of liquid iron and nickel, which generates Earth's magnetic field through convective motion. The inner core is solid, while the mantle and crust are solid or plastic rock.

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