Problem: A volcano erupts with molten rock lava flowing out. The lava contains silica above its melting point. What situation would favor the formation of quartz inside the lava?A. The lava that flows off a cliff into the ocean. B. The lava that flows onto a flat plain and forms a thick mass. C. The lava that gets mixed by convection currents and returns to deep beneath the earth crust.D. A 5 g sample collected by a geologist, placed into a metal sample box, then a freezer. E. A fine dispersion of lava dust shot into the atmosphere as ash.

FREE Expert Solution

We are asked what situation would favor the formation of quartz inside the lava

Quartz is a crystal made of silicon and oxygen. 


Analyze each statement: 

A. The lava that flows off a cliff into the ocean. 


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Problem Details

A volcano erupts with molten rock lava flowing out. The lava contains silica above its melting point. What situation would favor the formation of quartz inside the lava?

A. The lava that flows off a cliff into the ocean. 

B. The lava that flows onto a flat plain and forms a thick mass. 

C. The lava that gets mixed by convection currents and returns to deep beneath the earth crust.

D. A 5 g sample collected by a geologist, placed into a metal sample box, then a freezer. 

E. A fine dispersion of lava dust shot into the atmosphere as ash.