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Inside the Earth PowerPoint PPT Presentation

Inside the Earth - More details about Earth layers.

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Inside the Earth

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Inside the earth l.jpg

Inside the Earth


Composition what it is made of l.jpg

Composition (What it is made of)

  • Crust

  • Mantle

  • Core


The crust l.jpg

Outer layer

5-100 km thick

2 types of crust

Oceanic (very dense, made of basalt)

Continental (less dense, made of granite)

The Crust


Oceanic and continental crust l.jpg

Oceanic and Continental Crust


The mantle l.jpg

Middle layer

Very thick layer

The Mantle


The core l.jpg

The Core

  • Made mostly of iron

  • 1/3 of the earth’s mass

  • Very hot


Earth s layers l.jpg

How are the earth’s layers similar to an egg?

Shell=crust

Egg white=mantle

Yolk=core

Earth’s Layers


Physical structure of the earth 5 layers l.jpg

Physical Structure of the Earth(5 Layers)

  • Lithosphere - rigid outer layer (crust)

  • Asthenosphere - solid rock that flows slowly (like hot asphalt)

  • Mesosphere - middle layer

  • Outer Core - liquid layer

  • Inner Core - solid, very dense


Tectonic plates l.jpg

Tectonic Plates

  • Earth’s crust is broken into about 19 pieces

  • These plates move on top of the asthenosphere


The end l.jpg

The End


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