volcanoes and tectonic plates
definition of ring of fire
many volcanoes that rim the Pacific Ocean
substance that cn not be broken down into other substances
element
main parts of a volcano?
magma chamber, crater,lava flow, pipe and vent
3 types of volcanoes
shield, cinder cone and composite
where is old faithful?
Yellowstone national park
This is the definition: area deep within the mantle rises and then melts
hot spot
resistance of a liquid to flow
viscosity
what force pushes magma out of a volcano onto the surface
expanding gases
what builds a wide gently sloping mountain
shield volcano
what is the mountain that erupted in 1883
Mount krakatoa
definition: volcanic belts form along the boundaries of Earth's plates
converge and diverge
made up of particles of the elements oxygen and silicon
silica
what are 2 main kinds of eruptions
quiet eruptions, explosive eruptions
what is a tall, cone shaped mountains in which layers of lava alternate with layers of ash.
composite volcano
what is the Mountain in washington that erupted in 1980
Mount St. Helens
a volcano forms along the hot spot when magma erupts through the crust and reaches the surface
hot spot volcano
fast moving hot lava that has low viscosity
pahoehoe
what is pyrocrastic flow?
explosive eruption that hurls out a mixture of hot gases, ash,cinders and bombs
when magma hardens in a volcanos pipe
volcanic neck
what year did Mount etna erupt
2002
molten mixture of rock forming substances, gases and water from the mantle.
magma
lava that is cooler and slower moving
Aa
dormant means
sleeping volcano
define geyser
fountain of water and steam that erups from the ground.
what state is a volcano is erupting right now
Hawaii