Which one of the following types of volcanoes would be most explosive?

Question

A: Volcanoes that contain small amounts of water
B: Volcanoes that have thin magma
C: volcanoes that contain small amounts of carbon dioxide
D: Volcanoes that have large amounts of silica

Answer 1

A

Volcanic explosions such as St. Helen's are cause by super heat gases. Often Steam.

Answer 2

The answers D because of the high viscosity of high silica magma cause higher pressure build up in the volcano.

Answer 3

B