Question

define the following crust minerals sial and Sima extrusive rocks​

Answer 1

Answer:

SIAL is the layer which forms the continents. It is made up of Silica (Si) and Aluminium (Al). SIMA is the layer which makes up the ocean floor. It is called so because it is made up of Silica (Si) and Magnesium (Mg)

Answer 2

Answer:

Sial is the layer which forms. It is made up of silica and aluminium

Sima is the layer which makes up the ocean bed. It is made up of silica and magnesium