Describe the three layers of the enterior of the earth.
Answers
Explanation:
Earth can be divided into three main layers: the core, the mantle and the crust. Each of these layers can be further divided into two parts: the inner and outer core, the upper and lower mantle and the continental and oceanic crust. Both the inner and outer core are made up of mostly iron and a little bit of nickel.
Answer:The crust
The mantle
The core
Explanation:The crust.-The outer layer of the earth is commonly referred to the lithosphere.It has a relative thickness that ranges from 8-50 kilometres.Its composed of the oceanic and continental crust.The continental crust is composes of rocks made of silica and Aluminium.This layer varies in thickness.The ocean crust on the other hand is composed of rocks rich in silica and Magnesium.these rocks are denser and heavier.
The core.-It's sub-divided into two the outer core and inner core.Its mainly composed of rocks made up of nickel and iron with a high density of 3.8. The core is under very great pressure and has very high temperatures between 2000-5000°C. These rocks are in semi-solid state and produce a lot of heat as a result of radioactive decay.The core is separated from the mantle by a boundary surface called Gutenburg Discontinuity.
The mantle.It's divided into two parts the upper and lower mantle. The mantle is composed of rocks with a density of 3.3. It had rocks rich in silica,iron, and Magnesium. The upper part of the mantle is usually more rigid than the lower part.The rocks of the lower mantle are in a semi-solid state and move in from of giant convectional currents. These currents drive tectonic plates that lead to development of landforms.