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Volcanoes
Double Jeopardy
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Long cracks in the earth’s crust
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rifts
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A funnel shaped pit
near a volcano’s
central vent
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crater
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A large, semicircular
depression over a magma
chamber
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caldera
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A wide, flat
landform; usually
covers a large area
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Lava plateau
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After an explosive eruption,
a. Warmer temperatures
b. Darkened skies
c. Calm lava flows
d. Clear skies
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b. Darkened skies
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A volcano that has gently
sloping sides
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Shield volcano
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A volcano that has
steep slopes
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Cinder cone volcano
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A volcano that forms from a
combination of explosive
and non explosive eruption
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Composite volcano
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A large depression that
forms when magma
chamber empties
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caldera
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Set of deep cracks
between tectonic
plates
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Rift zone
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Columns of rising
magma
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Mantle plumes
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A volcanically active
area that is not near a
tectonic plate boundary
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Hot spots
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Where tectonic plates
separate
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Divergent boundary
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Where tectonic
plates collide
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Convergent boundary
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Underwater volcanoes
and mountains
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Mid-ocean ridge
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Movement of one
tectonic plate under
another is called
______.
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subduction
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A _______ volcano might erupt again.
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dormant
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An ______ volcano has
never erupted.
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extinct
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An _______ volcano is
currently erupting or
will erupt very soon.
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Active
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A tiltmeter measure the
changes of a volcano’s
____.
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slope
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A small volcano that
usually erupts for a
short time is ___
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Cinder cone volcano
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A volcano created by a
combination of explosive
and nonexplosive eruptions
is called a ____.
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composite
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A funnel shaped
pit form when
the vent
collapsed
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crater
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A lava ____ is a large, flat
area covered by lava.
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plateau
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The deep cracks that form
when two tectonic plates
pull away from each other is
____.
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Rift zone
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Double Jeopardy
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Final Jeopardy
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Parts of tectonic plates located above
mantle plumes are called ______.
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Hot spots
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Lava that has a fluid
and runny consistency
has a ___ silica
content.
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low
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Volcanic activity is
common along the MidAtlantic ridge. This
activity occurs at a
____ boundary.
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divergent
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Which of the following is NOT
considered when predicting
volcanic eruptions?
a. Composition of volcanic gases
b. Atmospheric activity
c. Internal temperature
d. Changes in volcano’s slope
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b. Atmospheric activity
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Molten rock found
deep within the
Earth is called ___
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magma
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Areas of Earth’s surface that
magma and gases pass
through are called ____.
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volcanoes
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Huge ___ flows can
be seen during a
nonexplosive
eruption
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lava
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If the water content of
magma is high, an ____
eruption is more likely.
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explosive
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A pyroclastic material
is ___ that blasts into
the air and ___.
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Magma, hardens
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Describe a climate change
caused by volcanic eruption.
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Ash blocks sunlight and
temperatures drop
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A ___ is a crack in the
earth’s crust
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rift
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A tiltmeter measures changes in
volcano’s ___.
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slope
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A volcano that will never erupt
again.
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extinct
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A small volcano
made up entirely
of pyroclastic
material is ___
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Cinder cone
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Molten rock flowing in the
earth’s surface is called ___.
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lava
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A large, flat area covered
by lava is called lava ____.
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plateau
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Cool, stiff lava that
forms jumbled heaps is
called ____ lava.
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Blocky lava
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Pebble- like bits of
magma that cool in the
air are called ____.
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lapilli
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Craters, calderas and
lava plateaus are
volcanic ___.
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landforms
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An area where
tectonic plates
collide is a (n) ___
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convergent
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One tectonic plate slides
underneath another in a
process called___
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subduction
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Magma that flows onto
the surface is ___.
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lava
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Underwater volcanoes and
mountains are found in the
___
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Mid-ocean ridge
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A large, s semicircular
depression over a magma
chamber is a ___.
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caldera
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Lava that forms
when volcano erupts
underwater is ___
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Pillow lava
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Final Jeopardy
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Final Jeopardy
This refers to tree tops in tropical
rain forest
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Final Jeopardy
canopy
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