Question

what do you mean by sial and sima?​

Answer 1

Explanation:

In geology, sima (/ˈsaɪmə/) is an antiquated blended term for the lower layer of the Earth's crust. This layer is made of rocks rich in magnesium silicate minerals. ... Comparable is the name 'sial' which is the name for the upper layer of the Earth's continental crust.

Answer 2

Sial - Sial is composed of Silicon and Aluminium.

Sima - Sima is composed of Silicon and Magnesium .

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