Magma
What's It Like When Volcanoes Blow?
Volcanic Eruptions
Volcano Types
100
melted rock beneath the crust
magma
100
what are solid materials that are expelled from a volcano?
pyroclasts
100
Name one thing that eruption types depend on?
composition
100
What are the three types of volcanoes?
Cinder Cone, Shield, Composite/Dome
200
most of the rock that is inside the Earth is in this state
solid
200
what is the most common gas released from volcanos?
water vapor
200
Name another thing that eruption types depend on?
temperature
200
Which volcano is generally small?
Cinder Cone
300
Cracks that magma forms when it is pushed upward
conduits
300
Where do volcanoes occur?
hot spots and plate boundaries
300
Highly explosive volcanoes have what type of magma?
high viscosity
300
What type of volcano is Mauna Loa?
Shield
400
thick, oozing lava has low or high viscosity?
High viscosity
400
what does sulfur smell like?
rotten eggs
400
What is another characteristic of highly explosive eruptions, other than magma type?
abundant pyroclasts
400
Do composite volcanoes have explosive eruptions or lava flows?
both
500
What are hot spots and why are they important?
They are areas under the crust that have high temperature. Magma is formed at hot spots.
500
What are all three gases that are released from a volcano?
Water vapor, CO2, and sulfur
500
what are lava flows?
eruption that has low viscosity magma that is runny, basaltic, and high in temperature
500
Name a characteristic about each volcano type that wan't already listed
Cinder Cone: Gas rich magma, lots of pyroclasts Shield: fluid, basaltic lava Composite: occur along convergent boundaries, composed of layers
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