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The Earth’s Interior

Explore the Earth's interior from the outer crust to the inner core, discovering the lithosphere, mantle, outer core, and solid inner core. Learn about the composition, temperatures, and magnetic properties that shape our planet. Delve into the layers' unique characteristics and functions. Uncover the mysteries beneath our feet.

jameswest
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The Earth’s Interior

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  1. The Earth’s Interior • Crust (Lithosphere) • Mantle • Outer Core • Inner Core

  2. Inner Core • The deepest part of the earth (1512 miles deep) 2700 km diameter, is a solid that contains both iron and nickel. Temp 4000 to 6000 C • It is because of this that the center of the earth is a magnet, a compass. • It generates a magnetic field that protects the earth from flying out of orbit.

  3. Outer Core • Outside of the inner core lays the outer core (1419 miles deep). • This is much like the inner core with the exception that it is a liquid that contains sulphur and oxygen (which lowers the melting point). 4000 C

  4. Mantle • Occupying 1789 miles of the earth is the magma (iron and magnesium) that makes up the mantle. • Upper and lower • It is extremely hot!! • goopy; very plastic-like.(upper mantle) • Also called the anthensphere • Mostly solid (lower mantle)

  5. Crust • Also called lithosphere • This is the top layer of the earth, which is basically hardened mantle (magma). • It contains two segments, the oceanic and continental crusts. • Note: this is the same crust, it just depends how thick it is to determine if it is part of the Oceanic or Continental Crust.

  6. Crust…cont’d • For instance, if you drained all of the water from earth, then there would be one, giant Continental Crust. • Likewise, if you flooded everything, you'd have one, giant Oceanic Crust.

  7. Read About Earth’s interior • Our Text p. 4-6

  8. The Earth’s Interior – Layer Names Outer Core Lithosphere or crust Mantle - Lower Mantle - Upper Inner Core

  9. The Earth’s Interior - Composition Liquid - magma Solid – hardened mantle Mostly Solid Goopy, plastic-like Solid – iron & nickel

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