Question

This layer of Earth is divided into two sections, both of which primarily contain silicate minerals. Part of one of the sections is able to flow like a thick fluid. What is this layer known as?

Answer 1

The layer of Earth you are describing is the **mantle**. The mantle is divided into the upper mantle and the lower mantle, both of which primarily contain silicate minerals. The upper part of the upper mantle, known as the asthenosphere, is able to flow like a thick fluid, allowing for the movement of tectonic plates above it.