Author Question: What is chemical convection, and how does it affect the outer core? What will be an ideal ... (Read 97 times)

Yolanda · **on:** Jul 16, 2018

What is chemical convection, and how does it affect the outer core?

What will be an ideal response?

Question 2

Put the layers of Earth in order from the surface (First Layer) to the center (Fourth Layer).

A) Outer core
B) Upper mantle
C) Crust
D) Lower mantle
E) Inner core

1) First Layer (Surface)
2) Second Layer
3) Third Layer
4) Fourth Layer
5) Fifth Layer (Center of Earth)

leahchrapun · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

Answer: Chemical convection occurs when differences in density are due to chemistry rather than temperature. In the outer core, this occurs when iron crystallizes and sinks to adhere to the inner core. This process leaves the remaining molten materials that are richer in lighter elements. These lighter elements make the melt buoy upward above the iron-rich material, contributing to convection.

Answer to Question 2

Answers: 1) C 2) B 3) D 4) A 5) E