Question
State three characteristics of the crust.
Answer
- Average thickness 16 – 24km
- Made up of two parts. the outer and inner crust
- The outer crust made of Silica and aluminium (SIAL)
- The inner crust made of SIMA
- SIAL density - 2.7 gms / cc
- SIMA average density 2.3 - 3.0 gm/cc
- Sial mainly forms the continental crust while Sima forms the oceanic crust.
- Made up of two parts. the outer and inner crust
- The outer crust made of Silica and aluminium (SIAL)
- The inner crust made of SIMA
- SIAL density - 2.7 gms / cc
- SIMA average density 2.3 - 3.0 gm/cc
- Sial mainly forms the continental crust while Sima forms the oceanic crust.
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