Volcanoes Answers
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The photo shows Old Faithful in Yellowstone National Park.
A
It is a caldera formed from a vent collapsing.B
It is a mud pot formed from pools of boiling, acidic mud.C
It is a volcanic neck that formed as a result of magma that never erupted.D
It is a geyser that formed due to water heated by magma erupting at Earth’s surface.2
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Mount St. Helens is a volcano that erupted with great force in 1980. Which phrase best describes this eruption?
A
quiet eruptionB
gentle lava flowsC
magma low in silicaD
high-viscosity magma3
Heat from magma deep beneath the Earth's surface warms underground water, which then rises due to temperature differences. This heated water emerges naturally, creating geothermal features.
A
dikeB
hot springC
lava plateauD
mud pot4
The image shows a volcano erupting at night in Russia.
A
Explosive eruption—beware of ash!B
Gases push out magma with great force!C
Volcano quietly erupts due to low-viscosity magma!D
High silica content of magma results in lava reaching sea level by morning!Did you find these answers helpful?
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