Download The Dynamic Earth

Plate
Tectonics
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Plate
Tectonics
Stress
And
Strain
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Earthquakes Volcanoes
Name the great supercontinent that
contained the entire land mass about
220 million years ago.
Pangaea
A mid-ocean ridge is an example of
this type of plate boundary.
Divergent (Spreading)
An ocean trench is an example of
this type of plate boundary.
Convergent (Subduction)
Rocks closer to a mid-ocean ridge
would be what relative age?
Younger
What is the force responsible for
plate movement?
Convection Currents
Who was the scientist that proposed
the theory of Continental Drift?
Alfred Wegener
The Andes Mountains are the result
of a collision between what TYPE of
plate(s)?
Continental and Oceanic
The Aleutian Islands are the result of
a collision between what TYPE of
plate(s)?
Two Oceanic Plates
The Appalachian Mountains are the
result of collisions between what
TYPE of plate(s)?
Two Continental Plates
The Appalachian Mountains are
what TYPE of mountain?
Folded
Type of fault in which the hanging
wall does NOT move up or down.
Lateral (Strike-Slip) Fault
Type of fault in which the hanging
wall moves down.
Normal Fault
Type of fold with younger rock
layers in the center.
Syncline
A low angle reverse fault.
Thrust Fault
Type of force that would create a
reverse fault.
Compressional
What is the difference in arrival
times between P-waves and Swaves?
Lag (Separation) Time
What is the point at which rocks
break to start an earthquake?
Focus
What is the minimum number of
seismograph stations needed to
locate an earthquake epicenter?
Three
What is the fastest seismic wave?
(This wave is able to travel through
water.)
P (Primary) - Wave
A massive earthquake on the ocean
floor could potentially cause a
________.
Tsunami (Tidal Wave)
Rock fragments thrown into the air
during a volcanic eruption.
Tephra (Pyroclastics)
Depression on a volcano which
forms when the summit or side
collapses into the magma chamber.
Caldera
Fast, superheated cloud of gas, ash,
tephra, and poisonous gases created
in some volcanic eruptions.
Pyroclastic Flow
Type of volcanic cone with broad,
gently sloping sides, less explosive
eruptions, and fluid lava.
Shield Cone
The measure of lava’s resistance to
flow.
Viscosity