Multiple choice

The main mineral constituents of the continental mass are _____.

  1. Silica and Alumina(Sial)

  2. Silica and Magnesium(Sima)

  3. Silicon and Ferrous(Sife)

  4. Nickel and Iron(Nife)

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A Correct answer
Explanation

The continental crust is primarily composed of silica and alumina, which is abbreviated as 'sial' (Si for silica and Al for alumina). The oceanic crust, on the other hand, is called 'sima' because it consists mainly of silica and magnesium.