Question

What is difference between Sial and Sima?​

Answer 1

Answer:

Sial means silicon and aluminium

Sima means silicon and magnesium

Explanation:

Sial is composed of silicon and aluminium.It is upper layer which forms a discontinuous cover over the Earth's crust and is entirely absent the ocean floor.

Sima is composed of silicon and magnesium. This is the second layer below sial which forms the ocean base. It is also called oceanic crust.