Question

1. which statement describes a volcano with magma that is high in silica?

it will probably erupt explosively.
it will produce dark - colored lava.
it will probably erupt quietly.
it will form a lava plateau.

Explanation:

High-silica magma has high viscosity, which traps gases easily. As pressure builds up from the trapped gases, the volcano is likely to erupt in an explosive manner. Low-silica magma produces dark lava, erupts quietly, and forms lava plateaus, which do not match the properties of high-silica magma.

Answer:

A. It will probably erupt explosively.