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Compositional and Physical layers of the Earth

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by

Shauna Chapa

on 29 September 2014

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Transcript of Compositional and Physical layers of the Earth

Brainstorm
Compositional and Physical layers of the Earth
Main Idea
There are two ways scientists divide up the interior of the Earth.
Compositional Layers - what each layer is made out of.
Physical Properties Layers - how a material behaves (brittle solid, a putty, or a liquid).
BRAINSTORM
Finale
Compositional Layers (3)
Crust:
Continental and Oceanic
Mantle:
Thickest Layer
Convection
Core:
Hottest
Densest
Physical Layers (5)
Lithosphere:
Crust & Rigid Upper Mantle
Tectonic Plates
Asthenosphere:
Soft layer moves tectonic plates.
Solid but flows like a putty.
Physical Layers Cont.
Mesosphere:
Strong lower mantle
Outer Core:
Liquid layer
Generates Earth's magnetic field
Inner Core:
Solid & dense
Under extreme pressure


How do scientists know this is what the interior of the Earth really looks like?
Scientists Use Inferences & Observations:
Seismic Waves
Meteorite Composition
Crust and Mantle Rock Samples.
Earth's Overall Density
Earth's Magnetic Field
Full transcript