Download Seafloor Spreading: 100

Continental
Drift
Seafloor
Spreading
More
Seafloor
Spreading
Earth’s
Interior
Layers
Fun
Facts
100
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FF
Continental Drift: 100
► This
is the name of the proposed
"supercontinent" where all the earth's
continents were once joined together.
►Pangaea
Continental Drift : 200
►Who
was the first scientist to propose
the idea of continental drift? When was
this?
►Alfred
Wegner was the first scientist to
propose the idea of continental drift in
1912.
Continental Drift : 300
►This
is how many years ago earth's
"supercontinent" began to split
apart.
►What
is 200-250 million years ago?
Continental Drift : 400
► These
are the two types of evidence that
were initially used to support the Theory of
Continental Drift.
► What are similar shapes of coastlines and
fossil evidence?
► Double
your points: Name two other types
of evidence
► What are glacial and mountain ranges?
Continental Drift : 500
 This is why Wegner’s theory of
Continental Drift was not accepted.
 What is the “how the continents” were
able to move?
 Bonus: This is the mechanism for
movement of the continents.
 What is seafloor spreading and
convection currents.
Seafloor Spreading: 100
►Seafloor
Spreading occurs at
what type of plate boundary?
►What is a divergent boundary?
Seafloor Spreading : 200
►These
features form as new crust
rises to the surface during seafloor
spreading
►What
are mid-ocean ridges?
Seafloor Spreading : 300
►This
ocean is currently growing in
size due to seafloor spreading.
►What
is the Atlantic Ocean?
Seafloor Spreading : 400
►This
was the first evidence to
support the idea of the reversal of
earth's magnetic field.
►What
is matching strips of polarity
on each side of a seafloor spreading
region?
Seafloor Spreading : 500
►When
the seafloor diverges,
what is formed?
►New
seafloor is created as the
crust diverges.
More Seafloor Spreading: 100
►This
is the scientist who
developed the theory of
Seafloor Spreading.
►Who
is Harry Hess?
More Seafloor Spreading : 200
►Which
ocean is getting smaller, and
which ocean is getting bigger due to
seafloor spreading?
►The
Atlantic Ocean is getting bigger,
while the Pacific Ocean is getting
smaller.
More Seafloor Spreading – 300
►What
are the two differences
between seafloor and continental
crust?
►Seafloor
crust is dense and thin,
while continental crust is thick and
less dense.
More Seafloor Spreading : 400
►Where
are the oldest rocks and
fossils found on the seafloor?
►The
oldest rocks and fossils are
found near the edges of the
oceanic plates near the
continents.
More Seafloor Spreading : 500
►Where
is seafloor recycled and
where is this feature located?
►The
feature is a trench and it is
located at a subduction zone.
Earth’s Interior Layers: 100
►What
layer of the Earth is under
intense heat and pressure;
thereby causing it to be a solid
mass?
►The
Earth's inner core is under
extreme heat and pressure.
Earth’s Interior Layers : 200
►Which
layer(s) have convection
currents?
►The
mantle has convection
currents.
Earth’s Interior Layers : 300
►Which
layer has both a cooler,
solid part and a warmer, liquid
part?
►The
mantle is both solid and
liquid.
Earth’s Interior Layers : 400
►Which
layer of the Earth is broken
up into brittle pieces? Why is this
happening?
►The
crust is broken up into brittle
pieces, due to convection currents.
Earth’s Interior Layers : 500
►How
does convection in the
mantle take place?
►The
outer core heats up the
magma in the mantle, causing it to
rise and fall due to density
differences due to temperature.
Fun Facts: 100
►What
is the difference between
"normal" and "reverse" polarity?
►"Normal"
polarity is when
magnetic North is true North,
while "reverse" polarity is when
North and South switch.
Fun Facts: 200
►This
is the upper portion of the
mantle.
►What
is the asthenosphere?
Fun Facts: 300
►These
are the two main
elements in Earth’s crust.
►What
are oxygen and silicon?
Fun Facts: 400
►This
is the thickness of oceanic
crust and continental crust.
►What
is 7-10 km Oceanic and
10-70 km Continental
Fun Facts: 500
►This
is how we know the outer
core is liquid.
►What
are Secondary or S waves?
This is created by the spinning of the
outer core, and what function does
it serve.
►What
is the magnetosphere and
Earth’s protection from solar winds
and space debris?
Virginia Jeopardy
Questions to study!