Sun, 4 terrestrial planets and 4 giant planet

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Sun, 4 terrestrial planets and 4 giant planet
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Earth structure

• Chemical composition
• Crust
• Mantle
• Core
• Physical properties
• Lithosphere
• Asthenosphere
• Mesosphere
• Outer core
• Inner core

Figure 2-14
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• Solar nebula
• Accretion of planetisimals
• Solar system

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Three sources of heat (a) accretion, (b)
compression, (c) radioactivity
(d) Latent heat stored in Earths core (10)
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Earth began homogeneousIron catastrophe resulted
in core formation Ongoing convection results in
differentiation
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Early atmosphere and oceans are the result of
volcanic outgassing
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Mantle convection brings heat to surface. That
heat is lost to atmosphere via conduction.

• Heat is transferred in 3 ways
• Radiation (sun)
• Conduction
• Convection

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Earth structure

• Chemical composition
• Crust
• Mantle
• Core
• Physical properties
• Lithosphere
• Asthenosphere
• Mesosphere
• Outer core
• Inner core

Figure 2-14
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