Magma that is ejected during a volcanic eruption forms _____ igneous rocks.
Question
Magma that is ejected during a volcanic eruption forms _____ igneous rocks.
Solution
Magma that is ejected during a volcanic eruption forms extrusive igneous rocks.
Here's the step by step explanation:
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Magma is molten rock that is found beneath the Earth's surface.
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When a volcano erupts, this magma is forced out of the volcano and onto the Earth's surface.
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Once on the surface, the magma cools and solidifies, forming rock.
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This type of rock is known as igneous rock, and because it forms on the surface of the Earth (as opposed to beneath the surface), it is specifically referred to as extrusive igneous rock.
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The term "extrusive" comes from the Latin word "extrudere", which means "to push out", reflecting the way these rocks are formed.
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