Volcano Parts
This is melted rock beneath Earth’s surface
What is magma?
This volcano has wide, gentle slopes
What is a shield volcano?
This type of lava is runny and flows easily
What is pahoehoe lava?
This is magma that hardens underground
What is igneous rock?
Volcanoes often form where tectonic plates meet
What are plate boundaries?
This is the underground storage area for magma
What is a magma chamber?
This volcano is small and made of loose rock fragments
What is a cinder cone?
This type of lava is thick and slow-moving
What is AA lava?
This forms when magma cuts across rock layers
What is a dike?
This type of boundary forms volcanoes as plates move apart
What is a divergent boundary?
This is the opening where lava escapes
What is a vent?
This volcano is steep and has explosive eruptions
What is a composite volcano?
This fast-moving, deadly cloud of ash and gas flows down a volcano
What is a pyroclastic flow?
This forms when magma spreads between rock layers
What is a sill?
This type of boundary forms volcanoes through subduction
What is a convergent boundary?
This is the bowl-shaped top of a volcano
What is a crater?
This type forms when thick lava piles up near the vent
What is a lava dome?
This dangerous mudflow is made of ash, water, and debris
What is a lahar?
This is a very large mass of hardened magma underground
What is a batholith?
This is a place where magma rises through the middle of a plate
What is a hot spot?
This large depression forms after a volcano collapses
What is a caldera?
Which volcano type is most likely to have quiet eruptions?
What is a shield volcano?
More of this makes lava more thick and explosive from trapped pressure?
What is silica?
Vents in the ground around a volcano releasing carbon dioxide
What is Fumaroles?
This main process at convergent boundaries results in volcano formation?
What is subduction?