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Types
Definitions
Causes
Volcano troubles
Potpourri
100
This volcano has gently sloping sides and was formed from runny lava.
What is a shield volcano?
100
This is what we call magma at the Earth's surface.
What is lava?
100
This forms in the deeper regions of the Earth's crust and in the uppermost layers of the mantle where temperature and pressure are very high.
What is magma?
100
During this type of eruption, hot debris, ash, and gas rapidly shoot out of a volcano?
What is an explosive eruption?
100
This is the name given to the fact that mountains near the ocean have more precipitation on the oceanic side.
What is the Rain Shadow effect?
200
These usually small volcanoes are made of pyroclastic material and have step sides.
What are cinder cone volcanoes?
200
These are volcanically active places on the Earth's surface that are far from plate boundaries.
What are hot spots?
200
This is the term given to the plate boundaries of the Pacific Ocean.
What is the Ring of Fire?
200
This type of lava, common in Hawaii, pours out quickly and forms a brittle crust.
What is Aa lava?
200
This term refers to a liquid's resistance to flow?
What is viscosity?
300
These usually large volcanoes are formed from alternating explosive and quiet eruptions.
What are Composite volcanoes?
300
This zone is a set of deep cracks that forms between plates.
What is a rift zone?
300
This type of boundary has mantle material that rises to fill the space opened by separating tectonic plates.
What is a divergent boundary?
300
This type of lava forms shen lava erupts underwater.
What is Pillow lava?
300
All volcanoes have some of this material, which is also found in glass.
What is silica?
400
These structures are similar to craters, but many times larger.
What is a caldera?
400
This is another name for a Composite volcano?
What is a stratovolcano?
400
Long chains of volcanoes in the middle of a tectonic plate are formed by this active place.
What are hot spots?
400
This lava, common on Hawaii, flows slowly and is ropy in texture.
What is Pahoehoe lava?
400
Mt. St. Helen's is this type of volcano.
What is a composite volcano?
500
This is a landform that results from repeated eruptions of lava spread over a large area.
What is a lava plateau?
500
These structures form from the collapse of the roof overlying a magma chamber?
What is a caldera?
500
This type of boundary is located where plates come together.
What is a convergent boundary?
500
This pyroclastic material means "little stones" in Italian.
What is Lapilli?
500
This instrument helps scientists detect small changes in the angle of a volcano's slope.
What is a tiltmeter?