The core (inner and outer) of Earth extends over what fraction of its radius?
A) almost 80%
B) roughly $1 / 2$
C) less than 10%
D) about $1 / 4$

Question

Quizplus · Accepted Answer

The Earth's core, which includes both the inner and outer core, extends over roughly half of its radius. The outer core starts at about 2900 km depth from the surface, and the Earth's radius is approximately 6371 km.

The Core (Inner and Outer) of Earth Extends Over What 1/21 / 21/2

The Core (Inner and Outer) of Earth Extends Over What $1 / 2$