The energy behind the 1902 pyroclastic flow that destroyed St.Pierre came from _________________.
A)the blast of the volcano
B)gravity
C)gas escaping from pieces of airborne pyroclastic material,creating a "popcorn" effect
D)All of the choices are correct.

Question

Quizplus · Accepted Answer

The energy behind the 1902 pyroclastic flow that destroyed St. Pierre came from a combination of factors: the initial blast of the volcano, the pull of gravity on the pyroclastic materials, and the gas escaping from pieces of airborne pyroclastic material, which created a "popcorn" effect, all contributed to the devastating flow.

The Energy Behind the 1902 Pyroclastic Flow That Destroyed St