Blue
This volcano has gently sloping sides and forms from runny basaltic lava.
Shield volcano
This type of volcano has steep sides and explosive eruptions, formed from alternating layers of ash and lava.
Stratovolcano / Composite volcano
A measure of a material's resistance to flow.
Viscosity
what is the difference between magma and lava?
its location
magma-beneath the volcano
lava- outside the volcano
This gentle, flowing eruption releases thin, runny lava.
Effusive eruption/ Quiet Eruption
The melting of the subducted oceanic crust creates this molten material that fuels volcanoes.
Magma
What are the 2 types of magma?
basaltic and rhyolitic magma
Vulcanian eruptions have violent bursts that eject blocks and ash in an ash cloud up to _____ km high.
20 km
What is the difference between active and dormant volcano?
Active – erupting or may erupt soon.
Dormant – “sleeping,” may erupt again.
Short bursts of steam-blown ash caused when groundwater meets magma produce this eruption type.
Phreatic eruption
This type of eruption poses the greatest danger to people.
Plinian Eruption
The largest volcanoes are found here.
under the ocean
This point inside the trench is the deepest known place on Earth.
Challenger Deep
How does Lava help shape new landforms on Earth?
by cooling and hardening into rocks or landforms
What is the difference between a mountain and a volcano?
A volcano has magma and can erupt, whereas mountains don't have magma and cannot erupt
This type of eruption ranges from weak to violent and is characterized by lava fountains.
Strombolian Eruption
A fast-moving mix of hot gases, ash, and volcanic rock that rushes down slopes.
Pyroclastic flow
How can volcanic eruptions affect people living far away from the volcano?
Ash can spread and affect air, health, and climate.
When does a volcano become extinct?
When it runs out of magma deposit.
Enumerate the 6 types of eruption.
Phreatic, Phreatomagmatic, Strombolian, Vulcanian, Hawaiian, Plinian