Inside the Earth.

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Inside the Earth.

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Presentation transcript:

Inside the Earth

Composition (What it is made of) Crust Mantle Core

The Crust Outer layer 5-100 km thick 2 types of crust Oceanic (very dense, made of basalt) Continental (less dense, made of granite)

Oceanic and Continental Crust

The Mantle Middle layer Very thick layer

The Core Made mostly of iron 1/3 of the earth’s mass Very hot

Earth’s Layers How are the earth’s layers similar to an egg? Shell=crust Egg white=mantle Yolk=core

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 Earth’s crust is broken into about 19 pieces These plates move on top of the asthenosphere