Transcript Slide 1 - Coyleweb.net

Mountain and
Volcano Quiz
Prep
•SOME STUDY IS
HIGHLY
RECOMMENDED
BY THE
MANAGEMENT
What Type of Volcano?
•Cinder Cone
•What are cinder
cones made of?
•Loose bubbly light
weight chunks of
rocks
•Rubble
•Why are cinder
cones not steeper?
•Cinder Cones have
moderately sloping
sides because loose
rubble doesn’t stack
well.
What Type of Volcano?
Shield
•Why are shield
volcanoes not
steeper?
• The lava shield
volcanoes are made of
is very thin and travels
long distances before it
hardens.
What Type of Volcano?
Composite
•Why are composite
volcanoes named
composite?
They are composed of
many different types of
layers
•What is the
tallest type of
mountain on
Earth?
• A shield Volcano
named Mona Loa in the
Hawaiian Islands.
•Which type of
volcano is most
likely to blow up?
•Composite
•Why do Composite
volcanoes tend to
blow up?
• They are very weak
because many of their
layers are nothing but ash
or cinder. When too much
pressure builds up, they
blow their layers apart.
•Which type of
volcano makes a lot
of noise and
fireworks, but isn’t
too likely to
explode?
•Cinder Cone
•What caused the
Hawaiian Islands
to form?
•Hot spots
•Why are there so
many islands?
• The Earth’s crust is moving,
but the hot spot is not.
Consequently, new
volcanoes form over the hot
spot after the old ones move
away.
•What type of volcano
is found at
Yellowstone?
•A Supervolcano
•Why did they have a
hard time locating
the Yellowstone
Volcano?
•It is so big that you
have to be in
space to see the
whole caldera.
•Where can we find
some composite
volcanoes in the
USA?
• Along the Pacific coast
in Washington and
Oregon.
•What caused these
coastal volcanoes to
form?
• The Cascade range
was formed by a
subduction zone where
the oceanic plate is
sliding under the
continental plate.
•What are island arc
volcanoes caused
by?
•Island arc
volcanoes are
caused by the
convergence of 2
oceanic plates
•What does
ISOSTASY refer
to?
• The balance of the weight
of a mountain against the
buoyancy of its base
which is submerged in the
Earth’s mantle
•The Appalachian
Mountains are what
type of mountains?
•Folded
Mountains
•Where are the
Appalachian
Mountains?
• They run from Georgia
to Maine parallel to the
Atlantic Coast
•What caused the
Appalachian
Mountains to
form?
• They formed by
continental/continental
convergence when
North America crashed
into Africa.
• Why does
Oceanic/Continental
convergence usually only
volcanoes while
Continental/Continental
convergence causes a few
volcanoes AND folded
mountains?
• Because oceanic crust
forms a continuous
subduction zone and
almost no collision while
continental collisions only
form a limited subduction
zone, as they make a
great big crash
•What causes peaks
and valleys in folded
mountains?
• The softer layers of
uplifted rock wear
away quicker than the
harder layers
What is an
uplifted
mountain?
• A mountain that was
formed by being
pushed upward by
currents in the Earth’s
mantle.
•Where can you
find uplifted
mountains?
•The closest ones are
the Adirondacks in
New York State.
• Why are the Adirondack
mountains not in long
chains like the
Appalachian mountains?
• The Adirondacks were
uplifted while the long
folds of the
Appalachians were
caused by a collision
of the whole coast of
the continent.
•What causes a
fault block
mountain?
• Fault block mountains are
caused by a continental
plate that is trying to split
apart. The mantle pushes it
up and spreads it. As the 2
sides pull apart, huge blocks
of rock drop along the fault
lines, leaving mountains on
one side of the fault.
•Where in the
US can we find
fault block
mountains?
•The Grand
Tetons in
Wyoming