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volcanoes
| volcanoes | |
|---|---|
| shield volcano | is it formed by thick lava flows. It has a gentle slope and not explosive. The largest volcanoes are shield volcanoes. |
| composite volcano | it has large symmetrical cones. It is built by layers of magma, volcanic ash, cinders, and bombs. They have violent and explosive eruptions |
| cinder cone volcano | it is a small cone-shaped volcano. They are very steep. blobs of lava spit out of the sides of the volcano. They can build over a short period of time. |
| lava dome volcano | lava is too thick to travel a bog distance when the volcano is erupted. Then the lava cools which clogs the vents. |
| dormant volcano | it is quiet now, but might erupt again |
| extinct volcano | most likely not going to erupt again |
| crater | a circular basin or depression |
| volcanic ash | it is pieces of rocks, minerals, and volcanic glass |
| subduction zone | composite volcanoes usually form at these. it is where oceanic plates go under continental plates, then magma rises to the top |
| volcanic neck | it is solid magma that is stuck inside the volcano |
| dike | they are called the veins of the volcano. they are pathways where magma/lava flows |
| sill | it is a sheet between the old layers and the new layers of rock, lava, etc. |
| caldera | a large basin-like depression resulting from the explosion or collapse of the center of a volcano |
| mid-ocean ridge | it is an under water mountain range formed by plate tectonics |
| rift valley | rift volcanoes form when magma rises into diverging boundaries |
Created by:
chloewalerius
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