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Plate Tectonics Test Review
Name:____________________________________________________
Draw an example of
convection currents. Label
the warmer and cooler
areas.
North American Plate
Which tectonic plate do we
live on?
Who first developed the
theory that the continents
moved around?
Alfred Wagener
What is the name of the
supercontinent that once
existed?
Pangea
What is the theory of plate
tectonics?
The Earth’s outer layer is
broken into pieces called
plates that move as they
float on the asthenosphere.
Crust, Mantle, Core
List compositional layers of
the earth in order.
List the physical layers in
order.
Lithosphere,
Asthenosphere,
Mesosphere, Outer Core,
Inner Core
Which compositional layer
is the thinnest and which is
the thickest?
What is the lithosphere?
What are plates?
What is the asthenosphere
and where is it found?
Crust is thinnest, Mantle is
thickest
A layer of hard brittle rock
broken into pieces. It is
made of the crust and the
upper part of the mantle.
Piece of lithosphere that
float on top of the
asthenosphere in the mantle.
Layer of flowing rock that causes
plate movement as the plates float
on top. Found in the mantle under
the lithosphere. Where Convection
currents happen.
According to the theory of Convection currents cause
plate tectonics, what causes plate movement. Occurs in
the plates to move and
the asthenosphere.
where does this happen?
An area that sinks beneath
What is a subduction zone? a less dense plate during
convergence
What happens at a
convergent boundary
involving two oceanic
plates?
Volcanic islands form,
earthquakes, trenches
What happens at a
convergent boundary
involving an oceanic plate
and a continental plate?
How does the theory of
plate tectonics help us?
What happens at a
convergent boundary
involving two continental
plates?
Land Volcanoes, trenches,
earthquakes
We can predict future
events such as earthquakes
and tsunamis
Mountains form,
earthquakes occur
Ridges form, earthquakes
What happens at a divergent occur, volcanoes can form,
boundary under the ocean? and seafloor spreading.
Volcanoes form,
What happens at a divergent earthquakes occur, rifts
boundary on land?
form
What happens at a
transform boundary?
Earthquakes occur, faults
form as the plates slip past
eachother.
What happens to
Temperature and pressure
temperature and pressure as increase
you move towards the
center of the earth?
All plate boundaries
At which plate boundary
would expect to experience (convergent, divergent, and
transform)
earthquakes?
At which plate boundary
would you expect to find
volcanoes?
What is seafloor spreading
and how does it occur?
What is a ridge and what
type of plate boundary is it
found?
What are the three
compositional layers made
of?
What is the difference
between the inner core and
outer core?
What is the difference
between oceanic and
continental crust?
Convergent and divergent
New sea floor is created by
divergent boundaries
An elevated part of the sea
floor that is caused by
seafloor spreading
(divergent boundary)
Crust- silicon, oxygen, and
aluminum
Mantle- silicon, magnesium
Core- iron and nickel
Inner- solid iron and nickel,
very dense
Outer- liquid iron and nickel,
creates magnetic field
Oceanic- thin, dense, made
of iron, magnesium,basalt
Continental- thicker, less
dense, made of 3 rock types