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Volcanoes

How do you determine if volcanoes will be explosive or quiet?

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February 01, 2009 6:12PM

if a volcano is high in silica, it will be explosive. If its low in silica, it will be quiet.

Two important things that determine whether an eruption will be explosive or quiet:

# The amount of water vapor and other gases that are trapped in the magma. # If the magma is basaltic or grantic.