Why does the magma from some volcanoes flow smoothly and relatively peacefully,while the magma from other volcanoes blasts forth violently and deals death over wide areas?

Question

Quizplus · Accepted Answer

All of these factors can influence the behavior of magma and the type of eruption that occurs. The chemical and mineral makeup of magmas can affect their viscosity and gas content, which can in turn influence how explosively the magma erupts. Variations in temperature, water content, and gas content can also affect the behavior of magma. Additionally, the location of the volcano with respect to tectonic plate boundaries or hot spots can play a role in determining the type of eruption that occurs. Therefore, all of these factors can contribute to differences in volcanic behavior.

Why Does the Magma from Some Volcanoes Flow Smoothly and Relatively