Why do crystals in a magma stop growing during cooling?
A) They run out of room to expand.
B) The pressure from rocks above becomes too great and the magma stops growing crystals.
C) They run out of heat.
D) They become too dense to grow.
Correct Answer:
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Q3: If magma or lava cools quickly, the
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Q5: Which igneous texture is characterized by two
Q6: What is required for an igneous rock
Q7: A porphyritic texture where large crystals are
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Q10: Igneous rocks with an andesitic composition _.
A)
Q11: Obsidian exhibits a_ texture.
A) porphyritic
B) glassy
C) fine-
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