Phreatomagmatic eruptions take place when ____________.
A)volatiles effervesce prior to lava flow
B)water enters the magma chamber and forms steam
C)basaltic lava clogs the chimney
D)lava or pyroclastic debris erupt by bursting through the sides of the volcano

Question

Quizplus · Accepted Answer

Phreatomagmatic eruptions occur when magma comes into contact with water. The water rapidly turns into steam, causing an explosion that blasts magma and pyroclastic material into the air. This type of eruption is often more explosive than purely magmatic eruptions because the rapid expansion of steam produces a more violent blast.

Phreatomagmatic Eruptions Take Place When ____________