as the silica content of magma increases, its viscosity ___________
a. decreases
b. increases
c. remains the same
d. may increase or decreas
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as the silica content of magma increases, its viscosity ___________
a. decreases
b. increases
c. remains the same
d. may increase or decreas
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B. Increase
Viscosity depends on primarily on the composition of the magma and the temperature. Higher SIO2(silica) content, magmas have higher viscosity, than lower content magmas (viscosity increases with increasing SIO2 concentration in the magma.
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