Multiple choice general knowledge

In the structure of planet earth, below the mantle, the core is mainly made of which one of the following ?

  1. Aluminium

  2. Chromium

  3. Iron

  4. Silicon

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Earth's core (both inner and outer) is primarily composed of iron (Fe) and nickel (Ni), with iron being the dominant element. This is evidenced by seismic data, Earth's density, and its magnetic field. Silicon is abundant in the mantle/crust, while aluminum is in the crust.