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Layers of Earth
Science Class
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Transcript

Layers of Earth

Science Class

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.

Layers of Earth

Earth has four layers:1- Crust: we live on this part2- Mantle: mostly solid rock but parts are hotter and more fluid 3- Outer Core: made up of liquid metal and rock4- Inner Core: solid rock made up of iron and nickel

How Many Layers Does Earth Have?

Earth has four layers:

How Many Layers Does Earth Have?

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.

What Is the Crust?

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.

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 Mantle?

Inner Core

Outer 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.

What Is the Core?

Let's Review!

Outer Core

Mantle

Inner Core

Crust

Match the name with the layer of Earth.

Keep practicing!

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