Earth's layers and spheres, from the inside out

1. Physical Earth
Layers and Spheres
1. Inner Core - solid, dense, heavy ball of
iron and nickel
2. Outer Core - Viscous mix of heavy
metals (moves with earth’s rotation causing
earth’s magnetic field)
3. Mantle - plastic-like, flows slowly in
circular motions
4. Crust - Oceanic (thin but dense) and
Continental (thicker but less dense)

2. Notice how the circular
movement within the
mantle PUSHES crustal
material up in some areas
and PULLS it below in
other areas...
INNER CORE - 800 miles in diameter
OUTER CORE - 1400 miles across
MANTLE - 1800 miles across
CRUST - 4-40 miles thick

3. Earth’s Spheres
Atmospheric Layers
TROPOSPHERE - surface, weather
STRATOSPHERE - Ozone layer, jet
airline travel
MESOSPHERE - Ionosphere
THERMOSPHERE - satellites,
auroras, Space Shuttle, re-entry