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Earth Walk: Structure of Earth
Location
Description
Name:_______________________
Scaled Distance
from center of
core (steps)
60 steps
Inner Core
Outer Core
Mantle
Actual Distance from
center of core
(kilometers)
0 – 1200 km
Metal (iron and nickel), solid,
3 – 5 million atmospheres of
pressure, 8 – 10000 Celsius
Density : 12 – 13 grams/cm3
Metal (iron and nickel), liquid, 175 total steps 1200 – 3500 km
generates the magnetic field,
2 – 1000 Celsius
Density : 9.9 – 12 grams/cm3
Olivine rich rock,
1, 000 Celsius, 1 million
atmospheres, near solid to
liquid (like silly putty)
Density: 3.3 – 6 grams/cm3
315 total steps 3500-6300 km
Asthenosph Layer of upper mantle on
ere (upper which the plates move
mantle)
Oceanic crust: basalt, 0 – 20
km thick, density: 3-3.5
grams/cm3
313-315
320 total steps 6300-6400 km
Lithosphere
and Crust Continental crust: granite,
Density: 2. 7 – 3 grams/cm3
Lithosphere makes up plates
20 – 70 km thick
Deepest Drill Kola Russia
Hole
Deepest
mine
TauTona Mine, South Africa
6200 – 63002- km
12 km
(7 miles)
3.8 kilometers