Explosive volcanic eruptions occur___________ .
A) when crystallization forces exceed the strength of the volcano
B) when violently escaping gases evolve suddenly to drop the magma density and propel molten magma from the chamber
C) in response to deflation of the volcano
D) whenever basaltic magma extrudes on the seafloor

Question

Quizplus · Accepted Answer

Explosive volcanic eruptions are primarily driven by the sudden release and expansion of gases within the magma. When these gases escape violently, they decrease the density of the magma, causing it to be propelled out of the magma chamber and resulting in an explosive eruption.

Explosive Volcanic Eruptions Occur___________