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21 Cards in this Set
- Front
- Back
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Volcano |
A hole in the ground where magma comes out. |
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Ring of Fire |
A chain of volcanoes around the Pacific Ocean. |
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Location of Volcanoes |
Divergent, Convergent and Hotspots |
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Hotspots |
When volcanoes break through a middle of a tectonic plate. |
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Viscosity |
The flow rate of a liquid. |
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Silica |
A mixture of silicon and oxygen. Makes the viscosity of a liquid thicker. |
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Parts of a Volcano (6) |
Need to know ash cloud, magma chamber, main vent, side vent, sill and crater. |
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Magma |
Hot, liquid rock underneath the ground. |
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Lava |
Hot, liquid rock on the surface of the Earth. |
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Pahoehoe |
Very hot lava that flows fast and dries smooth. Low viscosity. |
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Aa |
Cooler lava that flows slower and dries rough. High viscosity. |
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Quiet Eruptions |
Lava flows slowly. Forms shield volcanoes. |
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Explosive Eruptions |
Lava flows quickly and creates large ash clouds. Very dangerous. |
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Pryoclastic Flows |
A fast flowing ash cloud filled with poisonous gases, hot temperatures and bombs. Pompeii destroyer. |
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Shield Volcanoes |
Very low laying volcanoes. Form through quiet eruptions. |
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Composite Volcanoes |
High volcanoes that look like mountains. Form from both quiet and explosive eruptions. |
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Cinder-Cone Volcanoes |
Low laying volcanoes that have a large opening (crater). Form through explosive eruptions only. |
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Calderas |
Land forms that occur when a volcano collapses in. |
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Lava Plateau |
A flat area of land that is formed by slow moving lava. |
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Monitoring Volcanoes |
The common ways to monitor volcanoes are tilt meters, gases, temperature and seismic activities. |
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Life Cycle of a Volcano |
Active - Still erupting or going to erupt soon. Dormant - Sleeping. Can still erupt. Extinct - Not going to erupt again (95% chance). |
