Question

ldentify the rocks of primary origin a,lgneous. b, Sedimentary. c, meta morphic Rocks. d, Red soil​

Answer 1

Answer:

The earth’s crust is made up of various types of rocks.

Any natural mass of mineral matter that makes up the

earth’s crust is called a rock. Rocks can be of different

colour, size and texture.

There are three major types of rocks: igneous rocks,

sedimentary rocks and metamorphic rocks.

When the molten magma cools, it becomes solid.

Rocks thus formed are called igneous rocks. They are

also called primary rocks. There are two types of igneous

rocks: intrusive rocks and extrusive rocks.

Can you imagine lava coming out from the volcanoes?

Lava is actually fiery red molten magma coming out from

the interior of the earth on its surface. When this molten

lava comes on the earth’s surface, it rapidly cools down

and becomes solid. Rocks formed in such a way on the

crust are called extrusive igneous rocks. They have a

very fine grained structure. For example, basalt. The

Deccan plateau is made up of basalt rocks. Sometimes

the molten magma cools down deep inside the earth’s

crust. Solid rocks so formed are called intrusive igneous

rocks. Since they cool down slowly they form large

grains. Granite is an example of such a rock. Grinding

stones used to prepare paste/powder of spices and grains

are made of granite.

Explanation:

Answer 2

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