Structure of the Earth

 

Structure of the Earth

 

• The Earth is a sphere-shaped planet with three layers inside.
  
  
• The layers are:
• the crust (rocky)
• the mantle (soft)
• the core (metal).
  
  
• The core has two parts: the inner core (solid) and the outer core (liquid)

Elements in the Earth

Human activities use a wide range of elements, including:

• Hydrogen (H) and oxygen (O) found in water
• Iron (Fe) used for building materials and in car bodies

 

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.

 

The Crust

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 Mantle

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 Core

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.

 

Summary:

 

• The Earth has three layers: the core (metal), the mantle (rock), and the crust (hard).
• Different parts of the Earth have different things in them, like iron, nickel, and oxygen.
• The crust is broken into big pieces called plates that move slowly because of the mantle underneath.