Which is not a true statement?
A) The most violent and most catastrophic volcanic eruptions in Earth's history involved felsic magmas
B) The least violent volcanic eruptions in Earth's history involved ultra-mafic magmas
C) The more silica a magma contains, the more viscous or thick it becomes creating a violent eruption because internal pressure builds up inside the volcano
D) The less silica a magma contains, the magma remains molten and does not create a violent eruption
E) A mafic eruption would be thick and viscous allowing for internal pressure to build up inside the volcano

Question

Quizplus · Accepted Answer

A mafic eruption would not be thick and viscous, as mafic magmas have a lower silica content and are therefore less viscous. This means that they can flow more easily and do not build up internal pressure as much, resulting in less explosive eruptions.

Which Is Not a True Statement