Multiple choice question: From seeing the lava eruption at the West Mata volcano
ID: 296222 • Letter: M
Question
Multiple choice question:
From seeing the lava eruption at the West Mata volcano, which statement is most likely to be true of the igneous rock being formed?
A. Granitic rock is being formed that has larger mineral crystals because of slow cooling due to the high pressure in the deep ocean.
B. Obsidian is being formed that has no mineral crystals due to the fast cooling that occurs in water.
C. Basaltic rock is being formed that has small mineral crystals due to the fast cooling that occurs in water.
D. Pillow granite is being formed that is less dense than surrounding rock due to its high silicate content.
Explanation / Answer
From seeing the lava eruption at the West Mata volcano, basaltic rock is being formed that has small mineral crystals due to the fast cooling that occur in water.
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