A lahar may form when ____.
A) lava is cooled quickly underwater
B) volcanic gas is erupted into the stratosphere
C) lava cools and cracks along joints
D) magma moves through fissures in the country rock
E) rain falls on unconsolidated pyroclastic materials
Correct Answer:
Verified
Q29: The Hawaiian islands formed via _ volcanism.
A)subduction
Q30: The volcanic explosivity index (VEI)_.
A)describes the characteristic
Q31: Many of the volcanoes in mainland Alaska
Q32: Where are most volcanoes located?
A)the Mediterranean belt
B)the
Q33: Pyroclastic materials _.
A)have low viscosity and a
Q35: _ in California is the world's largest
Q36: Most of the world's active volcanoes are
Q37: All volcanoes _.
A)fall into one of five
Q38: Most volcanism at spreading ridges goes undetected
Q39: A _ is a type of volcano
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