13
QuizMultiple Choice

Igneous Rocks

Question 13 • *MHS - Earth Science - S1 - CR

An igneous rock has small, dark crystals. Which statement also accurately describes this rock?

Answer
A
It is an intrusive rock.
B
It has a coarse texture.
C
It was found on Earth’s surface.
D
It was formed from slow cooling.

Explanation

Small crystals indicate that the magma or lava cooled quickly, giving crystals little time to grow. Quick cooling usually happens at or near Earth’s surface, so the rock was found on Earth’s surface. Intrusive rocks cool slowly underground and typically have coarse, large crystals.

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