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Earth’s Interior/
Convection
Continental Drift
Sea-Floor
Plate
Spreading
Tectonics
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What is decrease?
As you move from
the center of the Earth
to the crust,
pressure does this.
Row 1, Col 1
What is radiation?
Energy transferred through
empty space is called this.
1,2
What is subduction?
The process by which
the ocean floor sinks
beneath a deep-ocean trench.
1,3
What is a mountain range?
Continental crust colliding
into continental
crust at a convergent
boundary produces this.
1,4
What is continental drift?
This hypothesis stated
that the continents were
once joined together
in a single landmass.
2,1
What are convection currents in the mantle?
The movement of Earth’s
plates is caused by this.
2,2
What is because it is cooler?
Old oceanic crust is
more dense than new
oceanic crust because of this.
2,3
What is the theory of plate tectonics?
This theory states that
Earth’s lithosphere
is in constant motion.
2,4
What is lack of force that could move continents?
Wegener’s idea of
continental drift
was rejected by his
peers because of this.
3,1
What is because heated material becomes less dense?
Mantle material rises
in convection currents
because of this.
3,2
What is the Mid-Atlantic Ridge?
The North American plate
and the Eurasian plate
are moving apart along this.
3,3
What is a rift valley?
On land,
continental plates pull apart
at a spreading boundary
and form this.
3,4
What are inner core, outer core, mantle and crust?
This is the order
of Earth’s layers
moving from the inside out.
4,1
What is convection?
The transfer of heat by the
movement of heated material.
4,2
What is sea-floor spreading?
This process adds new
crust to the ocean floor.
4,3
What is the mantle?
The asthenosphere helps
make up this layer
of Earth’s interior.
4,4
What is basalt?
Oceanic plates are made up
mostly of this material.
5,1
What are the outer core and the mantle?
Convection currents take
place in these two
layers of the Earth.
5,2
What are magnetic stripes?
Solidified in the ocean floor,
these show the direction
of Earth’s magnetic field.
5,3
What is a convergent plate boundary?
A continental plate collides
with an oceanic plate
at this boundary.
5,4