Question

I Short Answer Questions
1. One the basis of their origin, what are the two types of igneous rocks? Define them.​

Answer 1

Answer:

Igneous rocks may be divided into two categories. Intrusive or plutonic rocks crystallize from magma beneath the earth's surface. Extrusive or volcanic rocks crystallize from lava at the earth's surface.

Answer 2

Answer:

intrusive and extrusive

Explanation:

intrusive:- they are formed deep down below the earth's surface/crust.

extrusive:- they are formed on the surface of the earth.