Question

Which of the following indicate the correct order of the layers of the earth, starting in the center?

a)inner core, upper core, lower mantel, lower crust, outer crust
b)inner core, outer core, lower mantel, upper mantel, crust
c)core, crust, inner mantle, outer mantle
d)core, inner mantel, outer mantel, lower crust, upper crust

Answer 1

The correct order of Earth's layers from the center outward is the inner core, outer core, mantle (with its sublayers), and the crust. The core is primarily iron and nickel, and the crust is silicon and aluminum oxides.

Step-by-step explanation:

Order of the Earth's Layers

When discussing the structure of the Earth starting from the center, the correct order of the layers would be: inner core, outer core, mantle, and crust. The inner core is solid, composed mainly of an iron and nickel alloy, and is surrounded by the liquid outer core, which contributes to the Earth's magnetic field. Surrounding the outer core is the mantle, which consists of a solid that can behave in a plastic manner due to its ultramafic composition. Finally, the crust is the outermost layer, which includes both continental and oceanic types, varying in composition and density. These layers are differentiated not only by chemical composition but also by physical characteristics.

Specifically, the correct order per the choices provided would be Option B: inner core, outer core, lower mantle, upper mantle, crust.