What is the difference between extrusive igneous rocks and intrusive igneous rocks? Intrusive igneous rocks can form volcanic island chains such as Hawaii, whereas extrusive igneous rocks cannot. Another name for extrusive igneous rocks is plutonic rocks, and another name for igneous intrusive rocks is volcanic rocks. Extrusive igneous rocks are made from the cooling of magma, whereas intrusive igneous rocks are made from the cooling of lava. Extrusive igneous rocks cool and solidify beneath the Earth’s surface, whereas intrusive igneous rocks cool and solidify on the Earth’s surface. Extrusive igneous rocks cool and solidify on the Earth’s surface, whereas intrusive igneous rocks cool and solidify beneath the Earth’s surface. g

The correct answer is D. Extrusive igneous rocks cool and solidify at the Earth's surface, while intrusive igneous rocks cool and solidify below the Earth's surface.

Explanation

Igneous rocks, also called magmatic, are all rocks that are formed by the solidification of magma. However, igneous rocks are classified into two groups. First are the plutonic or intrusive igneous rocks that are the result of the solidification of magma within the lithosphere. Secondly, there are the volcanic or extrusive igneous rocks that are the result of the cooling of magma that occurs at the surface or a shallow depth (in whole or in part). According to the above definition, the difference between these two types of rocks is that extrusive igneous rocks cool and solidify on the Earth's surface, while intrusive igneous rocks cool and solidify below the Earth's surface. So the correct answer is D.

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