Goal:Homework:Warm-up: DR 4.3 “Plate Tectonics” due tomorrow Locate different types of plate...
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Plate Tectonics Goal: Homework: Warm-up: DR 4.3 “Plate Tectonics” due tomorrow Locate different types of plate boundaries on the sea floor map. In your science journal Look at the diagram on p. 108 – 109. What happens when a continental plate and oceanic plate collide? What is this process called, and why does it happen?
Goal:Homework:Warm-up: DR 4.3 “Plate Tectonics” due tomorrow Locate different types of plate boundaries on the sea floor map. In your science journal
Goal:Homework:Warm-up: DR 4.3 Plate Tectonics due tomorrow
Locate different types of plate boundaries on the sea floor map. In
your science journal Look at the diagram on p. 108 109. What
happens when a continental plate and oceanic plate collide? What is
this process called, and why does it happen?
Slide 2
Animation
Slide 3
Slide 4
Transform Boundary Divergent Boundary Convergent Boundary
(oceanic/continental) (oceanic/oceanic) (continental/continental)
On the back of your map:
Slide 5
Slide 6
Slide 7
Slide 8
Goal:Homework:Warm-up: none Draw diagrams for each of the types
of plate boundaries. In your science journal After watching
BrainPop, list and describe each of the three types of plate
boundaries. Tell what features youd expect to find at each
type.
Slide 9
Slide 10
Divergent Convergent Transform
Slide 11
Animation
Slide 12
Lithosphere is broken up into many plates Lithosphere is broken
up into many plates Interaction between the plates causes
continents to move and oceans to expand Interaction between the
plates causes continents to move and oceans to expand Earthquakes,
volcanoes, and other plate movement all caused by heat trying to
escape from the Earths interior. Earthquakes, volcanoes, and other
plate movement all caused by heat trying to escape from the Earths
interior. So why is it called the Theory of Plate Tectonics?
Magma in the ________________ starts to push through and form a
new ______. asthenosphere rift
Slide 15
___________boundary on a continent ___________boundary on a
continent New _______ forming New _______ forming Label the Great
Rift Valley on your seafloor map. Click here to see whats happening
at this rift valley. here Divergent ocean
Slide 16
Goal:Homework:Warm-up: none To draw diagrams of each type of
plate boundary. In your science journal Look at this diagram of a
convergent boundary between two oceanic plates. What causes the
trench to form, and what causes the island arc to form?
Slide 17
Plates move laterally past each other Plates move laterally
past each other Many earthquakes Many earthquakes All these
strike-slip faults surrounding the ridge are called the fracture
zone.
Slide 18
Slide 19
Label the San Andreas Fault on your seafloor map. Also, label
the large transform boundary that cuts across the East Pacific
Rise.
Slide 20
Plate are pushed together Plate are pushed together Depends on
which types of plates are converging Depends on which types of
plates are converging
Slide 21
Oceanic goes under continental due to greater density Oceanic
goes under continental due to greater density Trench is created off
the coast Trench is created off the coast Mountains created on land
due to rising magma Mountains created on land due to rising magma
magma
Slide 22
Slide 23
The OLDER oceanic plate will sink beneath the other The OLDER
oceanic plate will sink beneath the other Trench is created in
between the plates Trench is created in between the plates An
island arc is created due to rising magma An island arc is created
due to rising magma magma
Slide 24
Aleutian Islands, Alaska Japan The Philippines
Slide 25
Both plates collide and deform Both plates collide and deform
The crust thickens as mountains are pushed upward The crust
thickens as mountains are pushed upward Regional metamorphism takes
place Regional metamorphism takes place
Slide 26
Slide 27
Slide 28
Animation
Slide 29
Slide 30
Convection and Tectonics Animation
Slide 31
Hottest magma Cooler magma These motions cause _____________
These motions cause _____________ circulation RISES SINKS CLICK
ME!
Slide 32
Animation
Slide 33
Transform Boundary Divergent Boundary Convergent Boundary
(oceanic/continental) (oceanic/oceanic) (continental/continental)
On the back of your map:
Slide 34
Goal:Homework:Warm-up: Study for plate tectonics quiz tomorrow
To complete and label the features on a profile of the seafloor. In
your science journal Without looking at your book, notes, or map,
draw and label a diagram showing a convergent boundary between
continental and oceanic plates. You have 60 seconds starting
Slide 35
Goal:Homework:Warm-up: Study for plate tectonics quiz tomorrow
To complete and label the features on a profile of the seafloor. In
your science journal Without looking at your book, notes, or map,
draw and label a diagram showing a convergent boundary between
continental and oceanic plates. You have 60 seconds starting
NOW!
Slide 36
Slide 37
How many different plates are there in this diagram? 1 234
Slide 38
Label the features below:
Slide 39
1.Identify the plate boundaries by placing a big letter D above
the divergent boundary and placing a C above each convergent
boundary. 2.What process is taking place along the ridge? What
process is taking place at the trenches? 3.During subduction, a(n)
___________ plate will sink beneath the continental plate. 4.What
causes one plate to sink while another floats? sea floor spreading
subduction oceanic Oceanic crust is denser than continental because
its more mafic in composition.
Slide 40
5.Using a green colored pencil, shade in the area where the
youngest ocean rocks would be found. Then, in blue, shade in the
area of oldest ocean rock. Which of these areas (green or blue)
would have the thickest sediment sitting on top of it, AND why?
6.Using a red colored pencil, color in 2 areas where you would find
melting rock. What happens to the melted rock, and what landforms
does it produce? Blue would have the thickest layers of sediment
because its older and has had more time to accumulate debris. The
melted rock (magma) rises to the surface because its hot (less
dense) where it creates volcanoes.
Slide 41
7.On your diagram, draw circular arrows like those in Figure 1
on p. 110 to show the circulation of the magma within the Earth.
What is the name of this process? 8.Plate tectonic motion is
causing the ___________ Ocean to expand, while the __________ Ocean
is getting smaller. convection Atlantic Pacific
Slide 42
Online Quiz: Online Quiz: Article Summary: Article Summary:
PowerPoint Presentation: PowerPoint Presentation: Quiz window:
Thurs. 10/29 through Mon. 11/2 at 11:59 pm. Quiz window: Thurs.
10/29 through Mon. 11/2 at 11:59 pm. Everyone takes both quizzes.
Everyone takes both quizzes. See my website for the links. See my
website for the links.website Due Wed. 11/4 (day after day) Due
Wed. 11/4 (day after day) Choose ONE article of the two for the
Geology Unit. Choose ONE article of the two for the Geology Unit.
Everyone EXCEPT presenters Everyone EXCEPT presenters Wed. 11/4
Wed. 11/4 Look at rubric for requirements Look at rubric for
requirements Only our two presenting groups (see me after class)
Only our two presenting groups (see me after class)