Download Volcano Jeopardy!

Volcano
Jeopardy!
Volcano Jeopardy!
Volcano
Tectonics
Volcanic
Activity
Volcanic
Lanforms
Volcanic
Activity
Plate
Tectonics
10
10
10
10
10
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
50
50
50
50
50
Why is Volcanic
Activity considered a
constructive force?
Because volcanoes add new rock to
existing land or form new islands.
Back to
Menu
Magma is a liquid- therefore it is
(more/less) dense than
surrounding solid material.
It flows (up/downward) into
any cracks.
Less dense and flows upward into
cracks
Back to
Menu
•What is the bowl-shaped
area that forms around the
volcano’s vent and the lava
collects?
•Lava collects in the crater, the bowlshaped area that forms around the
volcano’s vent.
Back to
Menu
This dark-colored, volcanic rock is low in
silica and forms both Iceland and the
Hawaiian Islands.
Basalt
Back to
Menu
A large underground pocket of magma
is called?
A large underground pocket of
magma is a magma chamber.
Back to
Menu
Final
Jeopardy
The force of an
eruption depends on
three things……
1. The amount of gases dissolved in the
magma.
2.The temperature of the magma
3.the silica content of the magma
Back to
Menu
He was an Admiral in the
Roman Navy who
attempted a rescue
mission to Pompeii on
th
August 24 , AD 79 as
Mount Vesuvius erupted.
Pliny The Elder
Back to
Menu
The hotter the lava, (the more/
less fluid it is.)
The hotter the lava, (the more fluid it is.)
More fluid means the lava has a lower
viscosity.
Hotter lava
Back to
Menu
The silica content helps
determine whether the volcanic
eruption is quiet or explosive. If
the magma has a high viscosity
the eruption is quiet/explosive
and therefore the silica content
must be high/low.
The silica content helps determine
whether the volcanic eruption is
quiet or explosive. If the magma is
thick and sticky the eruption is
explosive and therefore the silica
content must be high.
Back to
Menu
This mountain range includes Mount St. Helens,
Mount Rainier, and Mount Shasta just to name a few.
The range forms as a result of subduction of The Juan
de Fuca Plate under the North American Plate.
The Cascade
Range
Back to
Menu
Final
Jeopardy
What are the three types of
volcanoes?
a) Shield
b) Cinder cone
c) Composite
Back to
Menu
Describe a the shape of a
Cinder Cone and what type
of eruptions make it that
way.
A steep, cone-shaped hill.
If lava is thick and stiff it may
produce ash, cinders and bombs
in explosive volcanoes
Paricutin in Mexico (farmers field 400m high)
Back to
Menu
•What kind of a volcano is a tall, coneshaped volcano which alternates
eruptions of lava flows with explosive
eruptions of ash, cinder and bombs.
Name two examples:
Composite Volcanoes-examples are:
Mount Fugi, Mount Vesuvius, and
Mount St. Helens.
Mount Fuji
Back to
Menu
Mount Vesuvius
Mount St. Helens
A Shield Volcano is wide at its
base and forms from layers of
thin/thick lava that is high/low in
silica and has gentle/ steep
slopes. An example of a Shield
Volcano is…
A Shield Volcano forms from layers of thin
lava that is low in silica and has gentle
slopes. An example of a Shield Volcano
is…Hawaii or Iceland
Back to
Menu
A divergent boundary is associated with:
1.explosive volcanoes, sea floor
spreading, mountain building
2.quiet volcanoes, island arc
volcanoes, shield volcanoes
3.quiet volcanoes, sea floor
spreading, mid ocean ridge
4.explosive volcanoes, island arc
volcanoes, hot spots
A divergent boundary is associated with:
sea floor spreading and quiet eruptions
like those that formed Iceland. As the
plates continue to diverge, Iceland will
continue to get wider.
Back to
Menu
Final
Jeopardy
Most volcanoes are found along plate
boundaries. Are volcanic mountains and island
arcs associated with convergent boundaries,
divergent boundaries or hot spots? Why? Give 2
examples.
Volcanic mountains and Island Arcs occur
at converging plates because the
denser plate dives below the crust,
melts and magma rises to the surface
creating the volcano.
Examples: Japan,
Aleutian islands,
New Zealand
Back to
Menu
Magma flows upward through cracks in
rock because it is
1. highly magnetic
2. highly fluid.
3. less dense than the surrounding
solid material.
4. more dense than the surrounding
solid material.
Magma flows upward through cracks in
rock because it is
1. highly magnetic
2. highly fluid.
3. less dense than the
surrounding solid material.
4. more dense than the surrounding
solid material.
Back to
Menu
Pyroclastic flows occur during the most
dangerous kind of volcanic eruptions.
Extremely hot gasses and fragments
of rock travel down the sides of the
volcano at speeds over 100 Km per
hour killing and burying everything in
their path. Pyroclastic flows are
associated with what type of an
eruption?
An explosive eruption.
Pyroclastic flow occurs
when an explosive
eruption hurls out ash,
cinders and bombs as well
as gases.
(400mph, 1,800˚F)
Back to
Menu
What happened in these
photos? Where is this?
These people were killed instantly in
the pyroclastic flow from the explosive
eruption of Mt. Vesuvius in Pompeii,
Italy in 79 A.D.
Depiction of Mt Vesuvius 79 A.D.
Back to
Menu
Excavated Pompeii today with Mt. Vesuvius
These are huge holes that form when a
volcanic eruption empties a magma
chamber and the volcanic mountain above
it collapses into the magma chamber.
Calderas
Back to
Menu
Final
Jeopardy
What type of a volcano are the Hawaiian
Islands? How did they form?
They are Shield Volcanoes. Each Island was
formed as the tectonic plate moved over the
Hot Spot and the lava produced a volcanic
mountain large enough to emerge through the
surface of the ocean. A hot spot is a location
where a column of extremely hot mantle rock,
called a mantle plume, rises through the
asthenosphere.
Back to
Menu
If geologists detect many small
earthquakes in the area near a volcano,
what can they infer about the volcano?
1.It is a good source of geothermal
energy.
2.It is dormant.
3.It is probably about to erupt.
4.It is extinct.
If geologists detect many small earthquakes
in the area near a volcano, what can they
infer about the volcano?
1.It is a good source of geothermal
energy.
2.It is dormant.
3.It is probably about to erupt.
4.It is extinct.
Back to
Menu
List the 3 types of
boundaries symbolized
by the following motions.
Convergent, Divergent, and
Transform boundaries.
Back to
Menu
Fissure eruptions occur when
lava flows from giant cracks, or
fissures, in the Earth’s crust. As
a result, a thick and mostly
flattened layer of cooled lava
creates this landform.
A Lava Plateau is created.
Back to
Menu
What’s the
difference between
magma and lava?
Magma is the name
given to liquid rock
below the Earth’s surface
while lava is the name
given to liquid rock on
the Earth’s surface.
Back to
Menu
Final
Jeopardy
You have 30 seconds to name as many plates as you can.
Back to
Menu