Download What is a fault?

Faults
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Subduction
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Pacific
NW
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Mega
Quake
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Boundaries
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Team Six
What is a fault?
Show Answer
A fault is a scratch on
the surface of a
tectonic plate.
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What type of fault
creates cliffs, lakes,
and springs?
Show Answer
Normal
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What type of fault has
no vertical movement?
Show Answer
Strike-slip
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Why do normal faults
create hot springs?
Show Answer
When one side drops
down, trapped water
becomes exposed.
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Why are faults so hard
to find?
Show Answer
1. They don’t break the
surface.
2. Weathering and erosion
hide surface features.
3. Development and
vegetation cover
surface evidence.
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What is a plate
boundary?
Show Answer
The meeting place of
two tectonic plates.
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Does the Pacific
Northwest have
volcanoes? Why or
why not?
Show Answer
Yes, we have
subduction of oceanic
crust.
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What is needed to
create volcanoes?
Show Answer
Subduction (of an
oceanic plate)
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Do the Himalayas have
volcanoes? Why?
Show Answer
No, there is no
subduction because it
is a convergent
continental-continental
boundary.
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Why is subduction
needed to create
volcanoes?
Show Answer
The subducting plate is
pushed closer to the
hot outer mantle,
melting it into magma,
which then creates
volcanoes.
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What kind of plate
boundary is the Pacific
Northwest?
Show Answer
Convergent
Continental-Oceanic
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What is the Ring of
Fire?
Show Answer
A ring of volcanoes
surrounding the Pacific
Ocean
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Does Oregon have a
trench of it’s coast?
Show Answer
Yes, it’s the location
where the Juan de Fuca
plate is subducting
under the North
American plate.
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What are 3 geologic
features associated
with the Pacific
Northwest boundary?
Show Answer
1. Mountains
2. Volcanoes
3. Trench
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What is the name of the
plate that meets with
the North American
Plate to create our
boundary?
Show Answer
The Juan de Fuca Plate
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Is a tsunami a single
wave or a series of
waves?
Show Answer
A series of waves
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What number on the
Richter scale is
classified as a
‘megaquake’?
Show Answer
9
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What are ‘ghost
forests’?
Show Answer
Forests that were
growing on top of a
boundary and were
submerged when an
earthquake released
the pressure on the
fault, but are now dead,
and back on land.
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What is an ‘orphan
tsunami’?
Show Answer
A tsunami without a
parent earthquake,
often originating from
across an ocean.
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How do plate
boundaries relate to
earthquakes?
Show Answer
Earthquakes are caused
by slippage or release
of tension in plate
boundaries.
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What is a divergent
boundary?
Show Answer
When two plates are
traveling away from
each other.
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Where is an example of
a divergent
continental-continental
boundary?
Show Answer
Iceland
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Iceland has no
subduction, does it
have volcanoes?
Show Answer
Yes, as the plates are
ripped apart, magma is
exposed.
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What formation is
created by oceanic hotspots? Give an
example.
Show Answer
Volcanic Islands
e.g. Hawaii
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Name two features that
divergent oceanicoceanic boundaries
create.
Show Answer
Rifts and Ridges
underwater
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Why is it important to
know about local faults
and plate boundaries?
Show Answer
It is important to know about
local faults and plate
boundaries because it helps
us understand our
environment as well as
helping us know where to
build, and the dangers of
building in subduction zones.
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Big Board Facts
© 2010 Jeff Ertzberger
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