Question

why does sial floats over sima and give their chemical composition. ​

Answer 1

Answer:

Reason why SIAL floats over SIMA layer:

Reason why SIAL floats over SIMA layer: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 lower portion of the earth is composed of SIMA. The SIAL is much lighter than the SIMA, that's why the SIAL floats over SIMA layer.

Explanation:

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Answer 2

Answer:sial appears to float above Sima because it has less density

Explanation:sial is made of silicon and aluminum. Sima is made of silica and magnesium