Category A
Category B
Category C
Category D
Category E
100
This is the weak spot in the crust where magma comes through.
What is a volcano?
100
This the type of eruption that produces pahoehoe and aa?
What is a quiet eruption?
100
This is the ingredient that makes the magma thicker.
What is silica?
100
This is the area in the volcano that magma collects.
What is the magma chamber?
100
This is the reason that bombs, ash, and cinders are only in explosive eruptions.
What is the volcano erupts violently, forcing the material out harshly.
200
This is the explosive eruption that hurls ash, cinders, and bombs out of the volcano.
What is pyroclastic flow?
200
This erupts from the volcanoes on Io?
What is sulfur?
200
This forms when the top of a volcanic mountain collapses.
What is a caldera?
200
This is built up layers of thin, runny lava that has flowed over a wide area and then hardened.
What is a lava plateau?
200
This volcano is layered lava, then a mixture of ash, cinders, and bombs, then lava, then the mixture again.
Which volcano is layered lava and then ash, cinders, and bombs, back to lava and so forth?
300
This is the belt of volcanoes around the rim of the Pacific Ocean.
What is the Ring of Fire?
300
This is the molten mixture of rock-forming substances, gases, and water deep in Earth's mantle.
What is magma?
300
This is the mass of rock that formed when a large body of magma cooled inside Earth's crust.
What is a batholith?
300
These are the factors that affect how thick or thin magma is.
What are gas content, temperature, and silica content.
300
This is a dead or unlikely to erupt volcano.
What is an extinct volcano?
400
This is a fountain of hot water and steam that erupts from the ground?
What is a geyser?
400
This volcano is a wide and gently sloping mountain made of hardened layers of lava.
What is a shield volcano?
400
This is an area where magm melts through the crust in the middle of a plate.
What is a hot spot?
400
This is a volcano that is erupting or has shown signs that it may erupt in the near future.
What is an active volcano?
400
This is how Hawaii was made.
What is a hot spot?
500
This is the thing that forms when magma hardens in a volcano's pipe and is later exposed?
What is a volcanic neck?
500
This is the material erupted from the volcanoes on Triton?
What is liquid nitrogen?
500
These are two items volcanic soils contain to make the soil very fertile.
What are phosphorus and potassium?
500
This is a process that uses piped in water for heat and the steam for electricity.
What is geothermal energy?
500
These are some of the hazards of volcanic eruptions.
What are damaged crops, burried cities, and clogged car engines?
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