sial layer floats on sima layer give reason
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The most of the upper layer of the earth is composed of the SIAL. The full form of the SIMA is Silica and Magnesium . ... The SIAL is much lighter than the SIMA, that's why the SIAL floats over SIMA layer. SIAL is said to be continental crust and SIMA is called oceanic crust
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the full form of the SIAL is silica and aluminum.
the most of the upper layer of the earth is composed of the sial.
the full form of SIMA is silica and magnesium.
the lower portion of earth is composed of SIMA.
the SIAL is much lighter than the SIMA,that's why the SIAL floats over SIMA layer.SIAL is said to be continen6crust and SIMA is called oceanic crust
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