Question

Magma that is highly viscous with a high silica and gas content creates an eruption that is _____.

a.)non-explosive
b.)very explosive
c.)full of lava
d.)full of rock

Answer 1

b.)very explosive

Step-by-step explanation:

Volcanic eruptions and eruptive phases are classified according to a wide range of qualitative criteria; in several cases they have taken names of volcanoes where a certain type of behavior was observed for the first time, or the one that most commonly occurs; Generally, different types of eruptions usually occur in the same volcano. In terms of activity there are two types of eruptions: explosive eruptions and effusive eruptions.

Explosive eruptions are characterized by the violent release of jets of gas and ash. These eruptions occur when the viscosity and silica content is very high (acidic magma), this type of magma retains a large amount of gases, which causes an increase in internal pressure, which results in strong explosions.

It usually happens that a lava plug blocks the chimney and, when this happens, the eruptions are even more violent. Explosive eruptions can send rocks, dust, gases and pyroclastic material up to 20 kilometers in the atmosphere with volumes that usually reach 100,000 tons per second, traveling several hundred meters per second.

Answer 2

Magma that is highly viscous with a high silica and gas content creates an eruption that is very explosive. The correct option among all the options that are given in the question is the second option or option "b". The gas content within the magma gives the huge explosive force. I hope the answer has come to your help.