Download - The Earth’s Interior
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The Earth’s Interior
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The Earth’s Interior Most of what we know is from geophysics
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Evidence from Seismic Waves Seismic Reflection Seismic Refraction
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Earth’s Internal Structure The Core
P-wave Shadow Zone S-wave Shadow Zones Liquid Outer Core Solid Inner Core
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S-Wave Shadow Zone
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Earth’s Internal Structure
The Earth’s Crust Continental crust- sial
Less dense and thicker than oceanic crust Oceanic crust- sima Mohorovicic discontinuity
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P-Wave Velocities & Boundaries
Moho
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Earth’s Internal Structure The Mantle
Ultramafic Rock Lithosphere
Crust & uppermost mantle Asthenosphere
Low velocity zone Lower mantle
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Earth’s Internal Structure Composition of the Core
Made of metal The Core-Mantle Boundary
Convection in both core and mantle