Question

Igneous rock is formed by the cooling and solidification of molten Earth materials. Igneous rock forms when magma or lava cools. If igneous rock forms above ground after a volcanic eruption, it ________________ forming ____________ igneous rock, such as obsidian which is a naturally occurring volcanic glass.
Responses
A cools quickly, extrusivecools quickly, extrusive
B cools quickly, intrusivecools quickly, intrusive
C cools slowly, extrusivecools slowly, extrusive
D cools slowly, intrusive

Answers

GPT-4o mini
The correct response is: **A cools quickly, extrusive**.

So the complete sentence would read:
"If igneous rock forms above ground after a volcanic eruption, it cools quickly, forming extrusive igneous rock, such as obsidian which is a naturally occurring volcanic glass."

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