The viscosity of magma increases with an increasing percentage of silica.

Question

Quizplus · Accepted Answer

This is true. Magma that has a higher percentage of silica is more viscous, meaning it is thicker and flows more slowly. This is because silica-rich magma has a higher concentration of polymerized molecules, which creates a more complex and tangled structure that inhibits flow. In contrast, magma with lower silica content flows more easily and is less viscous.

The Viscosity of Magma Increases with an Increasing Percentage of Silica