This volcano is made up mainly of small rock particles, or cinders. As erupting lava shoots into the air, it breaks into small fragments that cool and harden as they fall back to the ground.
What is a cinder cone volcano?
100
These are the least violent type of eruptions. Highly liquid lava generally flows out slowly and builds up shield volcanoes.
What are Hawaiian eruptions?
100
These volcanoes have not erupted within recorded history.
What are extinct volcanoes?
100
A long curved chain of volcanic islands.
What is a volcanic island arc?
100
A fountain of only steam that shoots into the air at regular or irregular intervals.
What is a fumarole?
200
This volcano has a small cone with steep sides.
What is a cinder cone volcano?
200
These eruptions begin with huge, loud explosions followed by smaller ones. Ash, dust and other volcanic materials are blown into the air.
What are Vulcanian eruptions?
200
These volcanoes erupt constantly?
What are active volcanoes?
200
A zone of frequent earthquakes and volcanic eruptions; encircles the Pacific Basin and is where 90% of the world's earthquakes
What is the Ring of Fire?
200
A bowl-shaped depression.
What is a crater?
300
This volcano is made up of layers of lava rocks. As liquid lava flows out at the surface from a vent, it spreads out in all directions.
What is a shield volcano?
300
These eruptions occur where thick magma accumumlates in the vent and builds up pressure that is released, emitting fragments that pile up into cinder cones. These eruptions are fairly gentle because pressure is released gradually.
What are Strombolian eruptions?
300
These eruptions occur at fairly frequent intervals.
What are intermittent volcanoes?
300
A region of volcanic activity in the middle of the tectonic plates.
What is a hot spot?
300
The reservoirs from which volcanic materials erupt.
What are magma chambers?
400
This volcano is made up of layers of lava flows, alternating with layers of ash, cinders and rocks.
What is a composite volcano?
400
These eruptions are the most violent. Gases trapped in sticky magma builds up tremendous pressure. As pressure is released, tons of rock and ash are thrown into the air as parts of the mountain are blown away.
What are Peleean eruptions?
400
What are volcanoes that have become inactive, but it is not certain whether or not they will erupt?
What are dormant volcanoes?
400
A stream of hot, bubbling water that flows out of the ground continuously. Occurs when magma heats water in the ground.
What is a hot spring?
400
Rocks that form from lava or magma. May have a fine or coarse texture.
What are igneous rocks?
500
Some of the world's largest volcanoes are this type of landform.
What is a shield volcano?
500
This type of eruption occurs frequently and is fairly gentle because pressure is released gradually.
What are Strombolian eruptions?
500
Active, Intermittent, Dormant and Extinct
What are the ways scientists classify how often volcanoes will erupt?
500
A fountain of hot water and steam that shoots into the air at regular or irregular intervals.
What is a geyser?
500
Rocks that have changed. Have been exposed to high temperatures and great pressure, changing the original form of the rock.