Isabella Boyert Flashcards
(27 cards)
Lava
When magma reaches the surface
Volcano
A week spot in earths crust where multimaterial, or magnet come to the service
Magma
A multi mixture of rock forming substances, gases, and water
Ring of fire
A major volcanic belt formed by many volcanoes on the Pacific coast
Island arc
When magma rises to the surface and breaks through the ocean floor
Hot spot
An area where material from deep within the mantle rises and melts forming magma
Magma chamber
A pocket that collects magma in a volcano
Pipe
A tube connected to the magma chamber
Vent
An opening where molten rock and gas leave
Lava flow
Lava the flows out a vent
Crater
A bowl shaped area that forms on the central vent
Silica
A material found in magama
Pyroclastic flow
Type of eruption that hurls out mixtures
Dormant
A volcano that is asleep and will awake in the future
Extinct
A volcano unlikely to erupt again
Geysers
Hot water that erupts from the ground
Shield volcanoes
When lava hardens on previous layers of lava forming a mountain
Cinder cone
When ash, cinders, and bombs build up and form a cinder cone volcano
Composite volcano
when layers of lava alternate with ash
Caldera
When a volcano collapses
Volcanic neck
When magma hardens in the volcano pipe
Dike
Magma that squeezes between horizontal rock layers and hardens
Sill
Magma that squeezes between horizontal rock layers Forming sill
Intrusion
When magma hardens underground to form igneous rock and an intrusion is always younger then other rocks
