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volcano test for bri
volcano test
| Question | Answer |
|---|---|
| shield volcano | gently sloping mountain. forms when a volcano errupts quietly. thin layers of lava build up slowly over a large area around the vent. |
| cinder cone | steep cone shaped hill. it forms when a volcano errupts explosivly. ashes, cinders and bombs pile up around the vent. |
| composite volcano | is a tall cone shaped mountain. it forms when a volcano errupts quietly the explosivly.layers of lava are followed by layers of ash, cinders, and bombs. |
| caldera | when a volcano collpses it leaves a huge hole. |
| cinder cone volcano | the boundries are hot spot, divergent or convergent. |
| composite volcano type of boundaries | convergent |
| shield volcano type of boundary | divergent |
| active volcano | has lots of energy in it and this happens when a volcano is currently in action. |
| extinct | no longer errupts |
| dormant | hasnt errupted in a long time |
| low viscosity | thin and runny lava |
| high viscosity | thick and chunky |
| pahoehoe | fast moving thin and hot lava |
| Aa | slow moving thicker and cooler lava. |
| magma | thick and sticky |
| pyroclastic flow | creates bombs, ash and lava. |
| hot spring | forms when groundwater heated by magma rises to the surface and collects in a nataural pool. |
| geyser | is a fountain of water and steam that errupts from the ground. |
| silica | magma contains silica.magma that contains more silica has a higher viscosity. |
| hot spot | is a place where material rises from deep in the mantle. the material forms magma. |