Volcano Formation
How do volcano's form at subduction zones?
Tectonic plates go under each other and the rising magma goes on top of the tectonic plates creating foundations of volcanoes.
What is deadlier then lava?
Volcanic ash
What is a Extinct volcano?
A volcano that no longer will erupt
What is Pluton, and what is a Caldera?
Pluton: an underground body of magma that has worn away and hardened.
Caldera:A large depression formed when a volcano erupted and collapsed.
What is a Cinder Cone volcano?
a volcano built from particles and blobs of lava that come from a single vent.
How do volcano's form at divergent boundaires?
Volcanoes form at divergent boundaires when the plates move away from each other and the magma rises through the gas.
How is magma different then lava?
Magma is lava but that is under the earth's surface.
What is a dormant volcano?
A volcano with no recent history of eruptions, and show no signs of eruption.
What are the types of plate collisions?
(oceanic/oceanic;
oceanic/continental;
continental/continental)
What is a composite volcano?
a tall volcano standing sometimes at 10,000 feet high.
What are Hot spots?
What is the Ring of Fire and wear is it?
The Ring of Fire is a place with a lot of volcano's and is located at the Pacific Ocean.
What is a Active volcano?
A volcano that has erupted or will soon erupt.
What is a Plug?
Magma that has hardend in a vent of a volcano.
What are the types of eruptions in order from least violent to most violent?
Hawian Plinian
Strombolian
Pelean
vulcanian
Iceland
Where do most volcanoes form?
At plate boundaires
How is Pahoehoe lava different then Aa lava?
Pahoehoe lava has a smothe surface, and flows easily, but Aa lava is rough and carries rocks with it.
What is a Alive volcano?
A volcano that is currently erupting.
What is a Tiltmeter?
A tool that observes volcano's and the land around them.
What is a Mid-Atlantic Ridge Volcano?
A mostly underwater mountain.
How do volcanoes grow?
It uses intrusion to pile up material into a volcano and it also can use extrustion to erupt all the material on to a cone which will turn in to a volcano.
What is a Volcanologists?
A Volcanologists is someone who studies volcano's and things around them. So things like rising magma, and water levels.
What is a Shield volcano?
A gently sloping volcano built almost entirely of lava flows and covers wide area.
What are the types of Pyroclasts?
Volcanic ash, Pumice, Solid blocks, volcanic bombs.
What is a Bulging Volcano?
A volcano with magma underground that changes the way the volcano forms, making the volcano shrink.