As the silica content increases,molten rock tends to become?

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As the silica content increases,molten rock tends to become?

2007-09-27 12:29:55 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology

2 answers

More viscous (flows less easily). Lava with little silica (Hawaii) flows readily. Molten rock with lots of silica (Mt. St. Helens) is mostly ash and doesn't flow as a liquid.

2007-09-27 12:57:44 · answer #1 · answered by Howard H 7 · 1⤊ 0⤋

viscous, or stiff

2007-09-27 13:46:41 · answer #2 · answered by jim m 5 · 0⤊ 0⤋