Parts of a Volcano
Melted rock underground.
What is magma?
Montana's largest volcano.
What is Yellowstone
These avalanches of super heated gas and tephra can reach speeds of over 100mph.
What are pyroclastic flows.
Magma that is forced across rock layers vertically and hardens.
What is a dike?
A giant hole that is formed after an eruption when a volcano collapses into the empty magma chamber.
What is a caldera?
Felsic magma has these two properties.
What is high viscosity and high Silica content?
A supervolcano can release billions of tons of this gas that stay in the upper atmosphere and cause global cooling.
What is sulfur dioxide?
The main component of magma that determines its characteristics
What is silica?
A giant pocket below ground that collects melted rock and dissolved gases.
What is a magma chamber?
The largest volcanoes built of thin, runny, mafic lava.
What is a shield volcano?
A large mantle plume that causes volcanic activity far from a plate boundary is called this.
What is a hot spot.
If you inhale this it will turn to cement in your lungs.
What is volcanic ash?
The formation of the Hawaiian Islands has this type of lava.
What is mafic?
Any opening in the volcano where gasses and lava escape.
What is a vent?
This type of volcano is formed when ash, cinders, and bombs build up in a steep pile around a volcano’s vent, usually smaller in size.
What is a cinder cone volcano?
What is lapilli.
These dangerous volcanic hazards can happen months after an eruption if there is enough rain.
What are lahars?
Tectonic plate subduction always produces this type of volcano.
What is a composite volcano?
A bowl shaped area that may form around the top or the central vent.
What is crater?
Found near subduction zones, volcanoes that sometimes have violent eruptions, sometimes lava flows down the sides and sometimes it is quiet.
What is a composite volcano?
85% of the world's volcanoes are found here.
What is the Ring of Fire.
Ash clouds and pyroclastic flows often cause this shocking phenomenon.
What are lightning storms?
Massive volcanic eruptions that can last thousands of years and cover vast areas with lava
What are flood basalts?