Question

differentiate between SIAL and SIMA​

Answer 1

Answer:

• 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. It is also called the continental crust.
• Sima is composed of silicon and magnesium. It is also called oceanic crust.

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Answer 2

Explanation:

SLAL 1) consists of silicate and aluminium

2) average thickness 25 km

3) denisty is 2.7 gm/ cc

SIMA 1) consists of silica and magnesium

2) average thickness is about 35 km

3) density varies from 3.0 to 3.4 gm/ cc