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25 Cards in this Set
- Front
- Back
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Fissure |
Lava erupts through long cracks in the ground, |
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Active Volcano |
erupts every 600 to 800 years |
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Dormant Volcano |
heavily monitored, especially in populated areas. |
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Effusive Eruptions |
Differences in composition and where the lavas erupt |
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Eruption |
The type of magma in the chamber determines the type of volcanic eruption. |
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Explosive Eruption |
happen along the edges of continents and produce tremendous amounts of material ejected into the air. |
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Extinct Volcano |
Volcanoes that don't erupt |
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Lahar |
This triggered a high-speed pyroclastic flow, which melted snow and created a volcanic mudflow known as a lahar. |
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Magma Chamber |
If felsic magma rises into a magma chamber, it may be too viscous to move and so it gets stuck. |
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Pyroclastic flow |
knock down everything in their path. |
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tephra |
Magma, rock, and ash burst upward in an enormous explosion. |
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viscosity |
the state of being thick, sticky, and semifluid in consistency, due to internal friction. |
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caldera |
Erupts with tremendous power |
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cinder cone |
Cone that is cylinder shaped |
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composite volcano |
are made of felsic to intermediate rock. |
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shield volcano |
are not steep, they may be very large. |
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super volcano |
eruptions are extremely rare in Earth history. It’s a good thing because they are unimaginably large |
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geyser |
Water sometimes comes into contact with hot rock. The water may emerge at the surface as either a hot spring or a geyser. |
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hot spring |
Water heated below ground that rises through a crack to the surface creates |
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lava dome |
When lava is viscous, it is flows slowly. If there is not enough magma or enough pressure to create an explosive eruption, the magma may form a lava dome. |
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lava plateau |
forms when large amounts of fluid lava flows over an extensive area |
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volcanism |
volcanic activity or phenomena. |
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hot spot |
magma, rises through cracks and erupts to form volcanoes. |
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quiet eruption |
the lava slowly flows out and forms flat layers that eventually make a shield volcano |
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magma |
hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling. |
