-
Consist of
-
Core
- outer
- inner
- Mantle
-
Crust
- Oceanic
- continental
-
The Core
-
What?
- Spherial
- High pressure
-
Divisions
-
Outer
- liquid
-
Inner
- Solid
- 3000-5000ยบ
-
consists of
- Iron
- Nickle
- Main Topic 5
-
The Mantle
-
What?
- 80% of earths volume
- 2800 Km deep
- Less dense/hot then core
-
Types
-
Lower
- close to core
-
rock
- convection
- plastic like
- weak/not ridged
- Asthenosphere
-
upper
- 50-100 Km thick
-
rock
- ridged
- Lithosphere
-
The Crust
- solid rock
-
types
-
Oceanic - Sima
- beneath sea
- 3-20 km thick
-
consists
- Silica
- Magnesium
-
Continental - Sial
- above sea
- 45-70 Km thick
-
consists
- Silica
- Aluminium