Earth’s Structure – Layers of the Earth

Name ______Class______

Name of Layer / Density
g/cm3 / Composition / oCelsius / State
solid liquid
gas / Two
Other Facts
Crust / 2.7g/cm3
to
3.3g/cm3 / oxygen, silicon, aluminum, iron, calcium, magnesium / 0oC
to
1,000oC / solid / 1. Oceanic crust - granite
2. Continental crust-basalt
3. Where we live
4. thinnest layer
5. lithosphere floats
6. shell of the Earth
Litho
sphere
Mantle
Astheno
sphere / 3.3g/cm3
to
5.7g/cm3 / magnesium, aluminum, silicon / 1,000oC
to
3,700oC / Solid, but the astheno-sphere flows like liquid / 1. plastic like
2. moves
3. lower mantle
4. contains most of the earth’s mass
Meso
sphere
Core / Outer Core / 9.9g/cm3
to
12.2g/cm3 / iron and nickel / 3,700oC / liquid / 1. magnetic field
2. heavy
3. spins
Inner Core / 12.2g/cm3
to
13g/cm3 / Iron and nickel / 7,000oC / solid / 1. center of earth
2. hotter than surface of Sun