Inner Core

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Inner Core Solid Diameter 1480 km 3200 - 3960
miles below surface Temp 9032 10,832 ºF
(5000-6000 ºC)
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Outer Core Plastic/ liquid 1990 Km thick 1,800 -
3,200 miles below surface Temp 7200 - 9032 ºF
(4000 - 5000ºC)
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Mantle 2865 km thick (80 of earths
volume) Temp 5400 ºF (3000ºC) 3 distinct
layers
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Mesosphere Non-Newtonian substance
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Asthenosphere Greek meaning without
strength 124 miles (200 km) thick 45155 miles
(72250 km) below surface Plastic/ Liquid Temp
2640 oF (1400 oC)
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Andrija Mohorovicic First to use seismic waves
to determine earths layers in 1909 Mohorovicic
Discontinuity
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Lower Lithosphere Brittle Broken
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Upper Lithosphere or Crust Solid Broken into
Plates High in Silica Rigid with some
flexibility Two types of crust
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Oceanic Crust 4-7 miles (6-11 km) thick
Basalt Age is relatively young
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Continental Crust Ave. thickness of 20 to 25
miles (30 to 40 km) Granite Much older than
oceanic