Question

properties of extrusive igneous rock​

Answer 1

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Explanation:

Igneous rocks are extrusive and intrusive. Extrusive rocks are formed from magma above the surface, while intrusive igneous rocks form from magma beneath the surface. The cooling process may be fast or slow, and determines the color and texture of the intrusive rock. Intrusive rocks also form large masses on land such as batholiths, dikes and sills.

Answer 2

Answer:

Extrusive or volcanic rocks:

These rocks are formed when magma breaks through the crust and reaches the surface of the earth (where it is called lava). It cools rapidly and solidifies to form rocks. The common rocks formed in this manner are basalt and obsidian.

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