Transcript What type of boundary is…

• What type of boundary
is represented here?
Transform Boundary
• What is being
represented at point A?
subduction
A
• What type of tectonic
plate boundary
sometimes has a
subduction zone?
convergent boundary
• Tectonic plates move on
top of what layer of the
Earth?
Asthenosphere
• What landform is the
red line in the picture
representing?
San Andreas Fault
• What is the theory that
is represented by the
breaking up of these
landforms?
Theory of Continental Drift
• Sea-floor spreading
occurs at what type of
boundary?
Divergent boundary
• What did Wegener call
his supercontinent in
his theory?
Pangaea
What type of boundary is…
• A?
– divergent
• B?
– convergent
• C?
– transform
• The landform
to the right
was formed
due to what
process?
weathering
• Plate movement
causing a(n)
earthquake
____________
would result in
the formation of
a tsunami as seen
to the right.
• This is a continental mountain range. What type
of boundary is this usually associated with?
Convergent boundary
• How are the layers of
the Earth detected?
Seismic Waves
• Earth’s thin outermost
layer is called ______.
The crust
• The landforms to the
right were formed by
volcano
________________.
• This is the process of
hot material from deep
in the Earth rising while
cooler material near the
surface sinks.
Convection
• What type of mountain
forms from the magma
that is created by seafloor spreading?
Volcanic mountains
• The use of
– fossils found on continental coasts,
– the close fit of continental coastlines,
– and the similarity of rock type on different
continents
were used as evidence to support what theory?
The theory of continental drift
• Each line marks a
change in
elevation
__________.
• What type of boundary
would cause the
formation of a trench?
Convergent boundary
• When the seafloor
spreads, what happens?
The older oceanic crust
moves aways from the
mid-ocean ridge, and
the new crust forms at
the mid-ocean ridge.
Which of the following types of plate boundaries would result in a
rift valley?
• Seismic waves travel at different speeds
and directions in Earth’s interior because
a) Of the way tectonic plates move.
b) Each layer has different physical
properties.
c) Sea-floor spreading causes magnetic
reversals.
d) The outer core is liquid.
Many scientists believe that convection currents in the
asthenosphere between South America and Africa caused the
separation of the two continents and the formation of the MidAtlantic Ridge. Which diagram best represents the convection
currents in the plate tectonic theory?
The diagram shows how the ocean floor is spreading. The new ocean
floor made of molten rock is being formed at a mid-ocean ridge. Which
best describes where the molten rock comes from?
A The crust
B Volcanoes under the ocean floor
C Masses of land to either side of the ocean
D The mantle just beneath Earth’s crust
The asthenosphere has the property of
plasticity, which allows the solid mantle to move
like a liquid. Which of the following explains how
the crust moves in different directions?
F Radiation
G Convection currents
H Geothermal
J Conduction
Which of the following statements is not supported
by the plate tectonic theory?
A Continents move through the seafloor crust.
B Locations of volcanoes and earthquakes can be
explained.
C Seafloor spreading provides evidence to support
the plate tectonic theory.
D There are three different types of plate
boundaries associated with the direction of plate
movement.
The lithosphere is Earth’s crust plus the rigid upper part of Earth’s
mantle. The map shows plates of the lithosphere. What does the map
tell you about the plates?
A The plates are all moving in the same direction.
B The plates are all the same size.
C Plates and continents are different.
D Where two plates meet, they always move apart.
What land feature is likely to occur between the South
American Plate and the African Plate?
F Mountain
G Trench
H Subduction zone
J Mid-ocean ridge
What type of boundary is located between the Nazca
Plate and the South American Plate?
A Convergent
B Divergent
C Transform
D Emergent
Newton’s laws of motion apply to everyday life in a
variety of ways. Which one of the
followingstatements does not demonstrate
Newton’s laws of motion as they relate to plate
tectonics?
F Plates resist change as in Newton’s law of inertia.
G The greater the force, the greater rate of
acceleration as in Newton’s law of acceleration.
H Volcanoes form from cooled magma as in
Newton’s law of acceleration.
J Plates exert a force on each other in opposite
directions as in Newton’s law of action-reaction.