Consider the following statement with reference to Earth's crust. 1. The continental crust is formed from Basaltic rocks. 2. The ocean floors are formed from Granitic rocks. 3. It is the outer thin layer with a thickness of up to 200 km. Which of the following statements given above is/are not correct?

1 only
2 and 3 only
1 and 3 only
1, 2 and 3

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 4 : 1, 2 and 3

The correct answer is 1, 2 and 3.

The crust is an outer thin layer with a total thickness normally between 30-50 km. Hence statement 3 is not correct.
The continents are composed of lighter silicate such as silica and alumina.
- It is also called 'SIAL'.
- They are made up of Granitic rocks. Hence statement 1 is not correct.
Oceans are having higher silicates such as silica and magnesium.
- It is also called 'SIMA'.
- They are made up of Basaltic rocks. Hence statement 2 is not correct.

4 views Answered 2022-09-04 04:29

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