forms when a crack in the earth's crust allows magma and gas to come through
volcano
vog
heated water that rises to the earth's surface
hot spring
magma when it breaks through the earth's surface
lava
a hot spring that blows steam and gases every now and then
geyser
a scientist who studies volcanoes
volcanologist
a mixture of ashes, cinder, and rock
tephra
hot spots
molten rock that explodes through the earth's surface
pockets of molten rock that are deep in the earth's lithosphere
magma chambers
a hot spring that contains more mud than water
mud pot
a ring of volcanoes around the edges of the Pacific Ocean
Ring of Fire
mud and rock fragments that surge down the sides of volcanoes
debris flow
avalanche of red hot dust and gases
pyroclastic flow
hardened and cooled magma and lava
igneous rock
runny lava, not really dangerous
strombolian eruption
the most dangerous type of eruption
pelean eruption