JAMB UTME - Geography - 2022 | Green Bridge CBT

The correct arrangement of the layers of the earth crust from the surface to the interior is?

sial, mantle, sima, core

sima, sial, core, mantle

core, mantle, sima and sial

sial, sima, mantle and core

Awọn alaye Idahun

The correct arrangement of the layers of the Earth's crust from the surface to the interior is: "Sial, Sima, Mantle, and Core". The Earth's crust is made up of several layers that differ in composition and density. The outermost layer of the Earth's crust is the "sial" layer, which is composed of lighter, more buoyant rocks like granite and has a lower density compared to the underlying layer. Below the sial layer is the "sima" layer, which is composed of denser rocks like basalt. The sima layer is thicker and denser than the sial layer, and it extends down to a depth of around 1800 miles. The next layer after the sima layer is the "mantle," which is the thickest layer of the Earth's crust. The mantle is composed of rocks that are even denser than the sima layer, and it extends down to a depth of around 2900 km. The innermost layer of the Earth's crust is the "core," which is made up of two layers, an outer core and an inner core. The outer core is composed of liquid iron and nickel, while the inner core is a solid ball of iron and nickel. In summary, the correct arrangement of the layers of the Earth's crust from the surface to the interior is sial, sima, mantle, and core.






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