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C4L2

volcanoes

QuestionAnswer
define volcano a mountain that builds up around an opening in Earth's crust.
sometimes these are forced out of volcanoes melted rock,gases,and pieces of rock
what is trapped in the magma that comes to the surface when a volcano erupts gases
what is the central opening of a volcano vent
How is a volcano formation different from erosion and weathering? Weathering and erosion ware down. Volcanoes build up.
Where do most volcanoes occur? Most volcanoes occur around faults.
When the Earth's plates move,one plate is pushed under and is turned into... magma
Where do volcanoes form? where Earth's plates move apart
What are the volcanoes described in the last one? rift volcanoes
The Hawaiian Islands are an example of volcanoes that form where.... the plates don't meet.
define hot spot a place where magma partially melts through Earth's crust.
How did the Hawaiian Islands form? As the plate moves over the hot spot the Hawaiian Islands were formed.
Explain sequence Magma melts through Earth's crust and it rises. Lava builds up around the vent.Volcano stays active until it passes over the hot spot,becomes dormant.
What does the shape of a volcano depend on? It depends on the kind of lava that erupts from it.
Describe a cinder-cone volcano. It is shaped like a cone,has steep sides,and the the magma is thick.
Describe a shield volcano. It has sides that are wide and flat,it's formed by layers, and the flows out gently.
describe a composite volcano made up of layers of lava and ash,and it can erupt as an explosive eruption one time and the next time the eruption can be quiet.
A cinder-cone volcano can be found in what state? California
A composite volcano can be found in what islands. Aleution
What volcano is the largest volcano in the world? Mauna Loa
Created by: buffychapman
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