Volcano-Types
Hazards
Features
Lava
Other
100
This type of Volcano is not high, but very wide. It has gently sloping sides.
What is a shield volcano?
100
This is the hazard that is the least hazardous to humans but very dangerous for things that cannot move.
What is lava flow?
100
There is one of these located near Squamish known as Black Tusk.
What is a volcanic neck?
100
This type of lava is created under water. It looks like something you put your head on at night.
What is pillow lava?
100
Old Faithful is one of these.
What is a geyser?
200
This type of volcano has very steep sides. It is the smallest of the three types of volcanoes.
What is Cinder Cone?
200
During the 1980 eruption of Mount St. Helens, over 3 m of this hazard were erupted. It also forms when we have fires.
What is ash?
200
This volcanic feature is a smaller version of a batholith.
What is a laccolith?
200
When you run across this type of lava your feet will hurt.
What is Aa lava?
200
Giant's Causeway shows an example of this feature.
What is basaltic column?
300
This type of volcanic activity does not form a volcano as we imagine it.
What is Fissure Eruption?
300
Don't try to outrun this hazard. It is a mixture of steam, ash, and rock.
What is pyroclastic flow?
300
This volcanic feature forms when a volcano blows away the sides. As seen at Yellowtone and Crater Lake.
What is a caldera?
300
Most lava is composed of this type of extrusive volcanic rock.
What is basalt?
300
The major eruption of Mount St. Helens occurred on this day.
What is May 18 1980
400
This type of volcano is formed of layers of pyroclastic material and lava flows.
What is composite cone (strato-volcano)?
400
When lava moves through the volcano is may form this type of hazard.
What is volcanic earthquake?
400
This volcanic feature forms horizontally within the earth. Often between layers of sedimentary rock.
What is a sill.
400
Lava with this type of viscosity will flow easily, forming things like shield volcanoes and flood lavas.
What is low viscosity?
400
This is an advantage of geothermal heat.
What is renewable, no affect on environment, little impact on habitat, etc.
500
This is the largest type of volcano based on total mass not just what we see.
What is shield volcano?
500
When a pyroclastic flow mixes with water it will form this type of hazard which killed a lot of fish during the Mount St. Helens eruption.
What is a lahar?
500
This is the large storage 'sink' of magma that feeds the volcano.
What is a batholith?
500
Lava with this composition comes from composite cone volcanoes.
What is highly viscous lava?
500
These are impacts of a volcanic eruption on the 4 spheres. (Need one example from each sphere)
What is A lot of things.
M
e
n
u