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15 Cards in this Set
- Front
- Back
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when does magma stop rising
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when it reaches the surface or becomes trapped
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what is a good model of an erupting volcano
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carbon dioxide rushing out out of soda pop
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what happens during a volcanic eruption
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the gases dissolved in the magma rush out carrying the magma
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what are features volcanoes share
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pocket of magma and crack to the surface
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what is a lava flow
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an area covered by lava as it pours out of a vent
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what way is a volcanos pipe
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vertical
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what factors determine a volcanic eruption
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force thickness silica and temperature
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whaat is rhyolite
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has the same composition as granite
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how does obsidian form
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forms when high silica lava cools quickly
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how does pumice form
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when gas bubbles are trapped in cooling lava
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how does basalt form
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from low silica lava
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is a volcanic eruption quiet or loud when lava is thick and sticky
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loud
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what is hotfast moving lava
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pahoehoe
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what is slow moving lava
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aa
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what is volcanic ash
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sand sized ash
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