Multiple choice general knowledge

In the structure of planet Earth, below the mantle, the core is mainly made up 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 is primarily composed of iron (Fe), with a solid inner core and liquid outer core. This is based on seismic wave studies and the Earth's density. The mantle consists of silicate minerals, while aluminium and chromium are more abundant in the crust.