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A lava flow is an example of an _____ igneous rock (one of the two main igneous rock groups).

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3 votes
the answer is extrusive
answered
User Tarek Hassan
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7 votes

Answer:

The correct answer is Extrusive igneous rocks.

Step-by-step explanation:

Extrusive igneous rocks also known as volcanic rocks form when magma reaches the Earth's surface in a volcano and cools rapidly.

This is the partial melting of the rocks inside the mantle and the crust.

They are smooth, fine-grained and crystalline. Its main effect is that magma cools much faster when it is outdoors or underwater, and this way, there is not much time left for crystal growth.

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User Kulvar
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