Download The Earth*s Interior

The Earth’s Interior

The Earth is divided into four major
layers:
The Inner Core
 The
center of the earth.
 Diameter = 2432 km
 Solid
 Iron-rich
The Outer Core
 Diameter
 Fluid
 Metallic
= 2270 km
The Mantle
 Diameter
= 2885 km
 83% of earth’s
volume
 Solid, rocky
 Silicate minerals:
iron, magnesium
The Crust
 Outermost
layer
 Diameter = 7-70km
 Made of continental
and oceanic crust
The Crust
Continental Crust
Diameter = 35 km
Less Dense
Granite and many
other types of rocks
Oceanic Crust
Diameter = 7 km
More Dense
Mostly basalt
The Crust
The Asthenosphere
 Upper
mantle
 Hot, weak
 Can move
The Lithosphere
 Includes
the
upper mantle
and the crust
 Continental and
oceanic crusts
 Ridged, solid
 Floats on the
asthenosphere