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Pronunciation Guide
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Listen to native speakers pronounce “mafic” in real conversational contexts with synchronized timestamps and subtitles.
Silica is one of the most plentiful chemical compounds on Earth's surface and helps determine how gooey lava is.Low-silica lava, also called mafic lava, creates super runny flows that race across the surface in rivers or spurt up as fountains.High-silica lava, called felsic lava, is thick and sticky, preventing the gases from easily escaping.