Journey to the Center of Earth Layers of the Earth Outer Crust Inner Crust Mantle Outer Core Inner...

Journey to the Center of Earth

Layers of the Earth

• Outer Crust• Inner Crust• Mantle• Outer Core• Inner Core

Inner Core750 mileradius

Outer Core1,430 miles

Mantle1,800 miles

Crust(10-25 miles)

Inside Our Earth

The inner core is made of solid nickel and iron.

The outer core ismade of hot liquid nickel and iron.

The crust is made of soil, water and rock.

The mantle is hot partmelted and part solidiron and magnesium.

Composition of the Earth’s Layers

Outer Crust

• This is the layer that we live on• The thickness ranges from five miles under the

oceans to 25 miles under the continents• Consists of cooled rock• It is the thinnest layer of the earth

The Mantle

• This layer is semi- liquid

• It consists of magnesium, iron, and silicon

• It is 3000 km wide• It is more solid closer

to the surface

The Outer Core

• This is consists of liquid due to the high temperatures

• It is 2100 km wide• This layer consists of nickel and iron

The Inner Core

• This layer is solid.• The reason it is solid is due to the high

pressure exerted on it from the outside layers.• It consists of the metals nickel and iron.• Its temperature is 6,000 degree Celsius.• Its width is 2,100 km.

Let’s Play

Rocks can move

Beneath the crust

Solid iron

Thinnest layer

Under the mantle

Plates ride on top

Melted iron

Center of Earth

Outermost layer

Solid rock

Earth’s ________ is divided into sections.

How many sections is Earth’s crust divided into?

These sections are known as …

The place where plates meet is called a …

Most volcanoes and earthquakes are located at the …

Let’s Play

Mountains

Plates move apart

Volcanoes

Changes the shape of the ocean floor

Trenches

Plates collide

Two plates slide past one another

One plate slides under another

When two plates converge ________ may work its way through the crust.

Magma may contain highly explosive ________.gases

A ____________ is formed when magma breaks through to the surface.

volcano

New _______ is formed when the lava cools and hardens.

An _______________ occurs when plates move and the crust slips or breaks.

earthquake

The gradual uplifting of the crust during an earthquake causes ____________ to form.mountains

THANK YOU!

Journey to the Center of Earth Layers of the Earth Outer Crust Inner Crust Mantle Outer Core Inner...

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