20. Fine-grained igneous rocks are likely to be A. inclusive B. extrusive C. intrusive D. exclusive E. preclusive are landforms formed by the extrusion of lava. A Oceans B. Waves C. Lakes D. Beaches E. Volcanoes

Question

Geography

Edwin Terrell

5 November, 11:20

20. Fine-grained igneous rocks are likely to be A. inclusive B. extrusive C. intrusive D. exclusive E. preclusive are landforms formed by the extrusion of lava. A Oceans B. Waves C. Lakes D. Beaches E. Volcanoes

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Answers (1)

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Nathaniel Waller · Answer 1

B. extrusive

Explanation:

Extrusive igneous rocks -

The composition of these rocks are finely grained, as the during the process of crystallization, the minerals does not get enough time to crystallize.

As, these rocks are rapidly cooled, and during rapid cooling, the fine grained of rocks are formed.

In case of slow cooling, the rocks generally have, coarse grained.

Hence, the correct answer is B. extrusive.