Volcano Types
The type of volcano that is steep and explosive
What is a composite volcano?
How sticky or watery a liquid is. We use this to describe the lava or magma
What is viscosity
Volcanoes that have erupted recently or have a high chance of erupting soon
What are active Volcanoes
The sides of the volcano, which can be steep or shallow, and are formed by layers of lava/rock and ash.
What are slopes?
After magma comes out of a volcano and cools off, it is called...
what is lava?
The type of volcano that is shallow and wide, that has watery lava and are not very explosive.
What is a shield volcano
What magma and lava is made of, what minerals are in it.
What is composition?
Volcanoes that do not have the possibility of exploding again
What are dormant volcanoes
The part of volcanoes where the lava comes up from underground, shaped like a tall cylinder.
What is the neck?
If a supervolcano exploded, the sun could be blocked out by high amounts of this
What is ash?
The most common type of volcano. They are much smaller than a composite volcano, and usually have a crater at the top.
What is a cinder cone volcano
A volcano that is usually an island, because it is formed from a random hole in the ocean's floor
what is a hot spot
The type of eruption that is non-explosive and runny like water
What is effusive
The area where the lava leaves the volcano during an eruption
What is a vent?
Something that is sometimes triggered by a volcanic eruption
What is an earthquake
The rarest type of volcano, and the most explosive. There has never been an eruption from this type of volcano when there have been humans on the earth.
What is a Supervolcano
The type of lava or magma that comes from continental crust, and is light in color.
What is felsic
Besides lava, these are the other things that can come out of a volcano during an eruption (name 2)
What are ash, rocks, and gas?
The hole at the top of some volcanoes that is left after an explosive eruption
What is a caldera?
When a mid-ocean ridge erupts and lets out lava, this can cause what to happen to the earth?
What is continental drift/ seafloor spreading?
A series of small volcanic openings on the ocean floor, which appear to make a crack across the middle of the seafloor.
What is a Mid-Ocean Ridge
The type of lava or magma that comes from the oceanic floor, and is dark in color
What is mafic?
Name the three things that impact explosivity
what is gas, composition, and amount of gas
The part of a volcano right under the surface that holds a large volume of magma. The magma often sits here before pressure pushes it out.
What is a magma chamber?
This is the flow of ash, rock, and hot air that moves down the side of the volcano at speeds up to 100 mph
What is pyroclastic flow