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Ch 12 Volcanoes

QuestionAnswer
An opening in the Earth that erupts gases, ash, and lava Volcano
Devils Tower in Wyoming is an example of a volcanic Neck
An active volcano in Hawaii is Kilauea
Ash, heat, and acid rain were present when this volcano errupted in Montserrat Soufriere Hills
Magma forms deep inside the Earth because of a rise in temperature and a drop in pressure
Two factors that determine whether a volcanic erruption will be quiet or explosive are The amount of water vapor and other gases trapped in the magma and the amount of silica in the magma
If, after an eruption , the top of a volcano collapses down a _______ forms. caldera
Balsaltic magma produces _________ eruptions nonexplosive
An example of a volcano that has nonexplosive eruptions is Kilauea in Hawaii
The steep-walled depression around a volcano's vent is a crater
A cinder cone volcano that is in Mexico is Paricutin
An opening that lava flows from onto the Earth's surface vent
An area between the Earth's mantle and core that is unusually hot and produced the Hawaiian Islands hot spot
Magma that is ____ in silica produces nonexplosive volcanoes low
Bits or rock or solidified lava dropped from the air tephra
This type of volcano has quiet eruptions, the lava flows in flat layers with gently sloping sides shield volcano
This type of volcano has explosive eruptions that throws tephra high into the air forming a steep sided loosely packed volcano cinder cone volcano
In this type of volcano the eruptions vary between explosive and quiet. It has alternating layers of lava flows and tephra composite volcano
An intrusive rock feature that forms when magma bodies are forced upward, but cool slowly under the surface batholith
Magma that is forced into a crack parallel to rock layers and hardens sill
Magma that is forced into a vertical crack between rock layers and hardens dike
Most igneous activity takes place Underground
Cinder Cone volcanoes produce______ eruptions explosive
Shield volcanoes produce_______eruptions quiet
Composite volcanoes produce _______and _______ eruptions quiet and explosive
Created by: cmorrow1
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