Transcript Volcano Vocabulary

•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Volcano Vocabulary
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Volcano
• Opening in the Earth’s surface
that erupts sulfurous gases, ash
and lava
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Vent
• Opening where magma is forced
up and flows out onto Earth’s
surface
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Crater
• Steep walled depression
around a volcano’s vent
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Magma
• Hot melted rock below the
Earth’s surface
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Magma Chamber
• Deep well underground that
holds magma under a volcano
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Lava
• Thick gooey molten rock material
flowing from volcanoes onto
Earth’s surface
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Plate Tectonics
Earth’s crust, and upper mantle are broken
into plates that flow and move around on
plastic-like layer of the mantle
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Divergent Plate Boundary
Boundary between two plates that
are moving apart
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Convergent Plate Boundary
• place where Earth’s plates
move toward each other
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Shield Volcano
Broad, gently sloping volcano formed by
quiet eruptions of lava. Found mostly
where Earth’s plates move apart from
each other. Formed from basaltic lava.
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Tephra
• Bits of rocks and solidified lava dropped
from the air during an explosive volcanic
eruptions; range in size from volcanic
ashes to volcanic bombs and blocks
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Cinder Cone Volcano
Steep sides, loosely packed volcano formed
when tephra falls to the ground. Formed
from andesitic lava.
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Composite Volcano
Volcano built by alternating explosive and quiet eruptions
that produce layers of tephra and lava; has broad base
with a steep top; found mostly where Earth’s plates
come together and one plate sinks below the other.
Formed from granitic magma.
•E.Q.: What are the characteristics and examples of the different types of volcanic
eruptions?
Hot Spot
• Unusually hot area where magma breaks
through the crust and forms a volcano. Not
at a plate boundary. This is how Hawaii
formed.