Weegy: Lava with higher content of SILICA has a higher viscosity.
User: If a large explosion causes the magma chamber below a volcano to empty, the volcano can collapse and form a/an _______.
Weegy: If a large explosion causes the magma chamber below a volcano to empty, the volcano can collapse and form a: caldera.
User: Shield volcanoes can form when less _______ lava flows quickly away from a vent.
Weegy: Shield volcanoes can form when less viscous lava flows quickly away from a vent.
User: Briefly describe what causes a volcanic eruption to be explosive.
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The causes of a volcanic eruption to be explosive: As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.
Added 5/21/2022 12:43:21 PM
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