Near Matches
Ignore Exact
Everything
2
Earth's Structure
(
thing
)
by
Ed Halley
Tue Jul 03 2001 at 5:00:10
Earth's Structural Layers
Distinct layers,
continental crust
- approx 6~60km thick
calcium
-
iron
-
magnesium
silicates
above, and
aluminum
-
sodium
-
potassium
silicates
below
temperature about 1900 Fahrenheit at bottom
oceanic crust
- approx 3.2km thick
aluminum
-
sodium
-
potassium
silicates
mantle
- approx 2896km thick, thicker under oceans
dense, semi-molten layer of
iron
-
magnesium
silicates
temperature about 6700 Fahrenheit
outer core
- approx 1995km thick
molten layer of 90%
iron
, 9%
nickel
, 1%
sulfur
temperature about 4000 Fahrenheit
inner core
- approx 2754km radius
dense, hot layer of 90%
iron
, 9%
nickel
, 1%
sulfur
Curie temperature
mantle
Earth
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