Structure of the Earth
Structure of the Earth Elements in the Earth All these elements can be found in the crust, the atmosphere and the oceans, which all form part of the Earth’s structure. We can use some of these things for our daily life, but we have to be careful not to use them all up.
Human activities use a wide range of elements, including:
The Crust The Mantle The Core
The top layer is the crust. It is like a big puzzle of land pieces called plates. The plates move slowly because the layer below them is soft and flows. The crust has many rocks that have different things in them, like oxygen, silicon, iron, and aluminium.
The middle layer is the mantle. It is thick and soft like a liquid. We cannot get anything from the mantle because it is too deep and hot.
The bottom layer is the core. It is made of metal, mostly iron and nickel. The core has two parts: the inside part is hard and the outside part is liquid. The core makes the Earth magnetic, which means it has a north and a south pole. We cannot reach the core because it is too deep and hot.
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