Transcript Reforming the Earth Jeopardy Review

Reforming the Earth
Plate
Tectonics
Boundaries
Earthquakes
Volcanoes
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Solid, outer layer consisting of
the crust and upper mantle
Answer
Lithosphere
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This type of crust has a low density made of
silica rich rock
Answer
Continental crust
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Layer of plastic rock below
the lithosphere
Answer
Asthenosphere
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Dense crust made of iron
and magnesium
Answer
Oceanic crust
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What forms when oceanic
lithosphere subducts
beneath oceanic
lithosphere?
Answer
An Island Arc
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What is an undersea mountain
range formed at a divergent
boundary?
Answer
Mid-ocean Ridge
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What kind of boundary
would from a mountain
range?
Answer
Convergent
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Boundary where 2
plates are moving
away from each other
Answer
Divergent
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Where are most divergent
boundaries found?
Answer
On the ocean floor
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The San Andreas Fault is
an example of this type of
boundary
Answer
Transform
.
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What are 2 types of
surface waves?
Answer
Love and Rayleigh
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What is an area where no direct seismic waves can
Be detected?
Answer
Shadow Zone
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What scale do we use to
describe the intensity of an
earthquake?
Answer
Modified Mercalli
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What is it called when
rocks on each side of a
fault suddenly return to
their undeformed shape?
Answer
Elastic Rebound
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What are the most
damaging seismic waves?
Answer
Surface Waves
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When this molten rock
solidifies beneath Earth’s
surface, intrusive igneous
rock forms
Answer
Magma
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Magma that erupts onto
Earth’s surface is called
what?
Answer
Lava
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Volcanically active
area of Earth’s
surface commonly far
away from a tectonic
plate
Answer
Hot Spot
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This forms in the ocean
where one plate is
subducted
Answer
Trench
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Magma formed from an underwater
volcano is called what?
Answer
Pillow Lava
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What is the supercontinent
that formed 300 million
years ago?
Answer
Pangea
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What scales do we use to
measure the magnitude of an
earthquake?
Answer
Richter and Moment
Magnitude
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The point on Earth’s surface
directly above the focus of an
earthquake
Answer
Epicenter
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A large pluton that can cover
an area as big as 100 km2 is a
_________
Answer
Batholith
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Devils Tower was caused by
the cooling of magma within
Earth’s crust until erosion
revealed it. What is this
structure called?
Answer
A Pluton
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