Vocabulary
What is a Volcano
A vent in the earths crust through which magma, steam, ashes, and gases are founded.
What is a Active Volcano
A volcano that is still erupting
Difference between Pahoehoe and Aa
Pahoehoe is a smooth type of lava and Aa lava is more rough
How do volcanoes form at subduction zones
Volcanoes form here in two settings where either oceanic plate descends below another oceanic plate or an oceanic plate descends below a continental plate
Define Pyroclastic flow
A pyroclastic flow is a hot chaotic mixture of rock fragments, gas, and ash that travels rapidly
What is a hotspot
A hot plume of hot mantle material rising from deep within the earth
What is Extinct Volcano
A volcano that will never erupt
What's the difference between Magma and Lava
Magma is the lava the is still underground, Lava is lava that has reached surface
How do volcanoes form at divergent boundaries
Plates rip apart at a divergent plate boundary, causing volcanic activity and shallow earthquakes
What is Volcanologist
A volcanologist studies and monitors the Earth's volcanoes in all stages of activity, all over the planet
Define Ring of Fire
A group of volcanos all around the Pacific Ocean
An alive Volcano is a Volcano that is currently erupting
What's the difference between Hotspots and Volcanos
Hotspots is a hot plume of hot mantle material rising from deep within the earth, Volcano is a vent in the earths crust through which magma, steam, ashes, and gases are founded
Where do most volcanoes form
Divergent Boundaries
How are Volcanoes important to creation
Volcanoes can Create Rich Volcanic Soil, Building Material, More land, Geometric energy
Define Pluton
igneous rock that has solidified below the surface of the earth
What is a Composite Volcano
Composite volcanoes are tall, symetrically shaped, with steep sides, sometimes rising 10,000 feet high
What's the difference between Oceanic/Oceanic and Continental/Continental
Oceanic/Oceanic crust is denser than Continental/Continental
Where do least Volcanoes form
Hotspots
What is a Caldera
A Caldera is a large, usually circular volcanic depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir
What is Volcanic Ash
Volcanic ash is a mixture of rock, mineral, and glass particles expelled from a volcano during a volcanic eruption
What is a Cinder cone Volcano
They are built from particles and blobs of congealed lava ejected from a single vent.
What's the difference of an a Shield Volcano and a Cinder-Cone Volcano
A shield volcano is a broad volcano with shallow inclining sides, Cinder-Cone Volcanoes are built from particles and blobs of congealed lava ejected from a single vent
What are 3 locations that form Volcanoes and the percentage found are
Hotspots 5%
Plate Boundaries 80%
Rift Volcanoes 15%
What is a tiltmeter
Tiltmeters and strainmeters measure subtle changes in ground slope and shape at volcanoes