Q2 of 30 Page 15

Tell whether right or wrong. Correct the wrong statement

Continental crust is made up of silica and magnesium

False


The continental crust is made up of silica and aluminium. Oceanic crust is made up of silica and magnesium.


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2

Tell whether right or wrong. Correct the wrong statement

The core of the earth’s interior is made up of hard rock

 2

Tell whether right or wrong. Correct the wrong statement

Secondary waves cannot pass through outer core.

 3

Answer the following

What are the two parts of the crust? What is the basis of classification?

 3

Answer the following

Why is the upper mantle called the asthenosphere?