Question

write short notes on the following:

A. Igneous rocks formed under the surface of the Earth

B. Igneous rocks formed on the surface of the Earth

C.Characteristics of igneous rocks


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Answer 1

Answer:

पृथ्वी की सतह के नीचे बनने वाली आग्नेय चट्टानों पर संक्षिप्त टिप्पणी लिखिए

A. The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of them Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet

B.Igneous rocks are rocks formed from molten magma. When magma comes out onto the surface of the Earth, it is called lava. Lava cools down to form rocks such as tuff and basalt. Intrusive rocks are made when the magma slowly cools to form rocks under the surface

C..

The type of igneous rocks that form from magma is a function of three factors: the chemical composition of the magma; temperature of solidification; and the rate of cooling which influences the crystallization process.

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