lu4ca7sMathelove
lu4ca7sMathelove lu4ca7sMathelove
  • 04-08-2016
  • Geography
contestada

An eruption is classified as an explosive volcanic eruption based on the amount of which mineral found in the magma?

A: silica
B: carbon
C: iron
D: basalt

Respuesta :

meerkat18
meerkat18 meerkat18
  • 06-08-2016
The correct answer is A. silica. 

The amount of silica found in the magma determines the viscosity. The higher the silica in magma, the higher the viscosity of a magma. So the correct answer is silica. It is not among the other choices.  
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