Science Layers of Earth

Science Class

Layers of Earth

Layers of Earth

The Earth is not just one big ball that's solid throughout, although it might look that way! But it is made up of different layers, a bit like an onion. Each layer you peel is made up of different things and they do different things too.

How Many Layers Does Earth Have?

Earth has four layers: 1- Crust: we live on this part 2- Mantle: mostly solid rock but parts are hotter and more fluid 3- Outer Core: made up of liquid metal and rock 4- Inner Core: solid rock made up of iron and nickel

How Many Layers Does Earth Have?

Earth has four layers:

What Is the Crust?

The crust is the outer solid layer and this is where all life exists on Earth's surface, including us, animals, mountains, sea, and soil. This is the only layer on Earth that scientists can study, as they can drill into it.

Crust

What Is the Mantle?

The mantle is the biggest and heaviest layer of Earth. It is made of molten, or melted, iron, minerals and other semi-solid rocks that will still flow under pressure. In this layer rocks rise. The scientist think that when they rise from the very intense heat and then cool down again, that they sink back to the core. This movement make the crust break into plates, or different sections.

Mantle

What Is The Mantle?

What happens when the crust breaks into plates? Well, they move and crash into each other and this causes earthquakes and volcanic eruptions. This movement is how new mountains and sea bed are formed.

What Is the Core?

The Core is made up of two layers: the outer core and the inner core. The outer core is made up of liquid iron and nickel. The inner core is kind like a solid lead ball and is as hot as the surface of the Sun.

Outer Core

Inner Core

Let's Review!

Match the name with the layer of Earth.

Inner Core

Outer Core

Crust

Mantle

Keep practicing!