Question

Which sequence correctly orders the Earth's internal layers by decreasing depth?

a. Crust, mantle, outer core, inner core
b. Mantle, crust, inner core, outer core
c. Inner core, outer core, mantle, crust
d. Crust, outer core, mantle, inner core

Answer 1

The sequence which descends from the deepest layer of Earth to the surface is inner core, outer core, mantle, and crust.

Step-by-step explanation:

The correct sequence that orders the Earth's internal layers by decreasing depth is Inner core, outer core, mantle, crust. Starting from the center of the Earth, the inner core is a dense, solid sphere composed primarily of iron and nickel, followed by the liquid outer core, which is responsible for the Earth's magnetic field.

Surrounding the outer core is the mantle, which exhibits plastic properties and constitutes the majority of Earth's volume. The outermost layer is the crust, a thin layer that is the least dense of all the layers.