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