Question

Which of the following correctly describes the composition of Earth’s core?

• A. Silicate rocks with low-density elements
• B. Solid iron-nickel outer core and liquid silicate inner core
• C. Liquid iron-nickel outer core and solid iron-nickel inner core
• D. Primarily aluminum silicate with traces of magnesium

Hint:

The outer core is liquid and the inner core is solid—both made mostly of iron and nickel.

Answer 1

The Correct Option is C

Earth’s core is differentiated into two parts: a liquid outer core composed of molten iron and nickel, and a solid inner core made primarily of solid iron and nickel. This structure has been inferred from seismic wave behavior and is key to understanding Earth's magnetic field.