The viscosities of magmas increase with increasing percentages of silica.

Question

Question: The viscosities of magmas increase with increasing percentages of silica.

Options:

1. True
2. False

Answer 1

1. True

The viscosities of magmas increase with increasing percentages of silica.

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The character of volcanic eruptions are largely controlled by the viscosity. Viscosity increases with increasing silica content due to silica chains.

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