Question

what is the earth's crust composed of ?​

Answer 1

Q. what is the earth's crust composed of ?

✍The upper layer of the earth is called the crust.

It is composed of silicon, oxygen, sodium, calcium , magnesium etc.

Answer 2

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==>The crust is deepest in mountainous areas. It can be up to 70km thick here.

==>The continental and oceanic crusts are bonded to the mantle, which we spoke about earlier, and this forms a layer called the lithosphere.

==>The crust is made up of different types of rocks: igneous, metamorphic, and sedimentary rocks.

==> Below the crust is the mantle. The upper part of the mantle is made up of peridotite, a rock denser than rocks common in the crust.