The viscosity of magma or lava is largely based on its ________ content.
A) sodium
B) silica
C) calcium
D) magnesium
E) iron
Correct Answer:
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Q52: Lava from stratovolcanoes typically flows much farther
Q53: Lapilli are larger than volcanic bombs.
Q54: Eruptions at mid-ocean ridges are highly explosive.
Q55: The largest volcanoes on the planet are
A)
Q56: Magmas with high silica content tend to
Q58: Caldera-forming eruptions are the largest and most
Q59: Magmas with low silica content tend to
Q60: Of the following volcanic eruptions,which is considered
Q61: Stratovolcanoes form at divergent plate margins.
Q62: Mid-ocean ridge volcanism results from melting asthenosphere.
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