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How are intrusive and extrusive igneous rocks alike?

Question:

How are intrusive and extrusive igneous rocks alike?

Igneous Rocks:

Igneous rocks are classified into two groups: intrusive and extrusive. Intrusive igneous rocks are formed when magma cools slowly below the surface, while extrusive rocks are formed when lava cools rapidly at the surface.

Answer and Explanation:

Intrusive and extrusive igneous rocks are alike in that they are both formed from the cooling and crystallization of molten substance (magma and lava,...

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Intrusive Igneous Rock: Definition & Examples

from General Studies Earth & Space Science: Help & Review

Chapter 5 / Lesson 4
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