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Volcanoes
Burke
22
Science
7th Grade
03/30/2014

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Cards

Term
magma
Definition
melted rock formed by heat and pressure deep inside Earth
Term
hot spot
Definition
area between mantle and core where hot rock is forced into the crust
Term
plate boundaries
Definition
places where most volcanoes occur
Term
vent
Definition
opening in Earth's surface through which magma flows
Term
crater
Definition
steep-walled depression around a volcanoes vent
Term
volcano
Definition
an opening in Earth's surface that often forms a mountain when layers of lava and volcanic ash erupt
Term
heat and pressure
Definition
cause rocks to melt and form magma
Term
Two factors that will determine whether an eruption will be explosive or quiet
Definition
water vapor and silica
Term
magma that is low in silica and produces no explosive eruptions is called
Definition
basaltic magma
Term
magma that is high in silica and produces explosive eruptions is called
Definition
granitic
Term
Bits of rock dropped from the air during the eruption of a cinder cone volcano are called
Definition
tephra
Term
what are the 3 forms of volcanoes
Definition
shield, cinder cone, and composite
Term
What is the type of magma found in a shield volcano
Definition
Basaltic magma
Term
What is the type of magma found in a cinder cone volcano
Definition
Tephra
Term
What is the type of magma found in a composite volcano
Definition
lava and tephra
Term
What does V.E.I. stand for
Definition
Volcanic Explosivity Index
Term
What was the largest volcanic eruption ever recorded by man
Definition
Mount Tambora
Term
What was the volcano that buried Pompeii
Definition
Mount Vesuvius
Term
What were people buried in at Pompeii- lava or ash
Definition
ash
Term
Between 1600 and 1982where have the most people died as a result of a volcano
Definition
Indonesia
Term
What is the largest volcano above water in the world
Definition
Mauna Loa
Term
What was the most destructive volcano in U.S. history
Definition
Mount St. Helens
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