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Wednesday Bell Ringer
• Write down daily learning log
–Pg. 8: Plate Boundary Notes
• Copy down homework
–Plate Boundary Tree Diagram
Types of Plate Boundaries
• Plate Boundaries: Where two
lithospheric plates meet
–Divergent (what does “diverge” mean?)
–Convergent (what does “converge” mean?)
–Transform
• Plate Tectonics Explained
Divergent Plate Boundaries
Divergent/Convergent Boundaries
Divergent V ideo
Divergent Boundary: What’s Happening?
• When two plates move or spread apart
from each other
• Draw Picture
– Connection: What causes them to move apart from each
other?
– What hand motion would you use?
•
http://www.classzone.com/books/earth_science/terc/content/visualizations/es0804/es0804page0
1.cfm?chapter_no=visualization
What does this actually look like?
Video 1: http://www.videosurf.com/video/divergent-boundary-119597587
And
Video 2: http://player.discoveryeducation.com/index.cfm?guidAssetId=2ED78244-ED66438C-B2DD-55C2D810C4A1&blnFromSearch=1&productcode=US
Divergent Boundary: Landforms Created
•
•
•
•
Mid-Ocean Ridge
New Crust
Rift Valley
Sea-floor Spreading
Divergent: Vocabulary
• Seafloor Spreading: New crust is formed
at divergent boundary; old crust is
pushed further away
Divergent: Vocabulary
• Mid-Ocean Ridge: Underwater mountain
ranges created when magma builds up at
divergent boundary
• Rift Valley: Deep depression or “Ditch”
where plates diverge
Real-World Example: Mid-Atlantic Ridge
Hikers walk in the shadow of cliffs in Ireland. The divergent
Mid-Atlantic Ridge rises above sea level, with the North
American plate to the west and the Eurasian plate to the east.
Divergent Summary
• How are the plates moving at
the boundary?
• What landforms occur as a
result of plate movement?
• Divergent boundaries
• Convergent boundaries
– Video Clip (2:00)
• Transform boundaries
Today we are learning
about CONVERGENT!
Convergent Boundaries
• There are two things that can
happen when two plates move
towards one another
–1. One sinks under the other and
starts to melt
–2. They both collide and start to
crumble and pile up.
Types of Convergent Boundaries
• Oceanic - Oceanic
• Oceanic - Continental
• Continental - Continental
• The only difference between the two type of
plates is the rock composition and the
density.
Continental-Collision:
What’s happening?
• Two Continental Plates collide and
crash into each other– lithosphere
folds like wrinkles
• Draw Picture
Continental-Collision: Landforms
• Mountains
– Continental plates
crunches and folds the
rock at the boundary,
lifting it up and leading
to the formation of
mountains.
• Real World Example:
Appalachian
Mountains
Continental-Subduction:
What’s Happening?
• Oceanic-Continental: Oceanic plate subducts (more
dense)
• Oceanic-Oceanic: Older oceanic plate subducts
under younger oceanic plate
• Draw Picture
– http://geology.com/nsta/convergent-boundary-oceaniccontinental.gif
Continental-Subduction:
Landforms
• Trenches
• Volcanoes
• Earthquakes
Vocabulary: Convergent-Subduction
• Subduction Zone: An area where one plate
(denser) sinks below another
Vocabulary: Convergent-Subduction
• Volcano: A mountain that opens downward to
a pool of molten rock below the surface of the
earth. When pressure builds up, eruptions
occur and gases and magma are expelled.
Real World
Example:
Cascade
Volcanoes
(Washington/
Oregon)
Vocabulary: ConvergentSubduction
Trench: Deep
depression in
ocean floor
forms where
one plate sinks
below the
other
Real World
Examples:
Mariana Trench
Convergent Plates
Types of Convergent Boundaries
Relative
Density
What
happens
OceanicOceanic
OceanicContinental
ContinentalContinental
Both have
same density,
but one is
older
Older plate
goes under the
other
(subduction)
Oceanic is
more dense
than
continental
Ocean plate
goes under the
continental
plate
(subduction)
Volcanoes
Exp: Ring of
Fire
Both have same
density
Landforms Volcanoes and
ocean trench
Exp: Mariana
Trench
They hit each
other and squish
upwards
Mountains
Exp: Himalaya
Mountains
Where are we going?
We appear to be headed for another super continent as
North America, South America, Asia and Australia
converge in the ever shrinking Pacific Ocean
Ring of Fire= Subduction Zones
Summary Sentence
• How are the plates moving at
the boundary?
• What landforms occur as a
result of plate movement?
• Divergent boundaries
• Convergent boundaries
• Transform boundaries
Transform boundaries: What’s
Happening
• Two plates slide past each other
http://www.classzone.com/b
ooks/earth_science/terc/con
tent/visualizations/es0804/e
s0804page01.cfm?chapter_
no=visualization
Transform boundaries:
Landforms
• Earthquakes
• Faults
http://www.classzone.com/b
ooks/earth_science/terc/con
tent/visualizations/es0804/e
s0804page01.cfm?chapter_
no=visualization
Vocabulary: Earthquakes
• Earthquakes: “Shaking” in the earth due to plate
movement. As the plates move, they put tension on
themselves and each other. When the force is large
enough, the crust is forced to break. When the break
occurs, the stress is released as energy which moves
through the Earth in the form of seismic waves
Vocabulary: Transform
• Faults: Cracks in the earth crust that occur
when plates snap
• Real World Example: San Andreas Fault
(California)
Tsunami
• Tsunami: Giant waves caused by
earthquakes occurring on the ocean floor
• “Harbor Wave” in Japanese
• Real World Example:
– Japanese Tsunami
– Mega tsunami
Summary Sentence
• How are the plates moving at
the boundary?
• What landforms occur as a
result of plate movement?
Thursday Bell Ringer
• Write down daily learning log
–Pg. 15: Div. & Conv. Lab Analysis
–Pg. 16: Video Responses
–Pg. 17: Plate Tectonic Versatile
• Copy down homework
– Finish Stations for THURSDAY, FRIDAY, &
MONDAY
• Glue in completed notes/homework on pg. 14
Plate Tectonic Stations
• Station #1: Divergent & Convergent
Inquiry Lab
• Station #2: Plate Tectonics Video
Responses (Ipad)
– Fill out sheet
• Station #3: Plate Tectonics Versatile
– Highlight/Underline and number evidence
– If finished, play matching game
Friday Bell Ringer
• Find your table color
• Glue in station completed
yesterday (Pg. 15-17) into
interactive notebook
–Pg. 16 should be written in notebook
–Stations need to be completed for
homework
Think Earthquakes are rare?
• http://www.wolframalpha.com/input/?i=eart
hquake
• Think again! Over half a million magnitude 1
earthquakes a year!
Plate Tectonic Stations
• Station #1: Seafloor Spreading Lab
and Convergent Inquiry Lab
• Station #2: Video Responses
–FOLLOW DIRECTIONS ON TABLE!
• Station #3: Survey & Plate Tectonics
Versatile
–Highlight/Underline and number
evidence
–If finished, play matching game
Monday Bell Ringer
• Find your table color
• Glue in station completed
yesterday (Pg. 15-17) into
interactive notebook
–Pg. 16 should be written in notebook
Tomorrow
• Plate Tectonics Classwork Mastery
Check
–May use notebook
–Pages must be glued in to use!
–Pages #11-17
Simon Says
• Divergent
• Convergent
• Transform
Plate Tectonic Stations
• Station #1: Seafloor Spreading Lab
and Convergent Inquiry Lab
• Station #2: Video Responses
–FOLLOW DIRECTIONS ON TABLE!
• Station #3: Survey & Plate Tectonics
Versatile
–Highlight/Underline and number
evidence
–If finished, play matching game
CER
• Is a volcano more likely to occur in E or F? Write your claim and
evidence
Plate Tectonic Stations
• Station #1: Seafloor Spreading Lab
and Convergent Inquiry Lab
• Station #2: Plate Tectonics Brainpop
–Fill out sheet
• Station #3: Plate Tectonics Versatile
–Highlight/Underline and number
evidence
Convergent Inquiry Lab
1. What does Map 1 represent or have on it
(hint: look at the title and extras on the
map)?
– Location of volcanoes
2. What does Map 2 represent or have on it
(hint: look at the title, key and colors)?
– Plate boundaries: Red Convergent, Blue
Divergent, Green Transform
3. Place Map 1 and Map 2 side by side.
CER: Claim, Evidence, and Reasoning
• Write your claim and evidence.
Convergent Inquiry Lab
4. What do you notice now that the two maps are together?
• The large clumps of volcanoes line up with the plate
boundaries
5. What color line/boundary do the volcanoes line up with?
• Red lines
6. What does this color mean (hint: look at the key)?
• Convergent Plate Boundaries (2 plates are coming towards
one another)
7. Why do you think that these plate boundary lines and
volcano lines match up?
• Volcanoes are formed at convergent
boundaries/subduction zones
Convergent Inquiry Lab
• Based on what you have seen and what you
know about Continental Drift and
Convection Currents, how do you think
volcanoes form?
CER
• Write claim and evidence (3).
• The movement of earth's plates
directly cause all EXCEPT this type of
catastrophic event:
A. hurricane
B. tsunami
C. volcano
D. earthquake
Frequent Earthquake Areas
•
The pink lines show where transform
boundaries exist:
http://www.learner.org/interactives/dyna
micearth/plate.html
• News about Haiti:
http://www.cbsnews.com/news
/four-years-after-earthquakehaiti-says-its-makingcomeback/
HAITI
CALIFORNIA
JAPAN
INDIA
Seismograph
• Instrument that
detects, measures,
and records various
seismic waves
(Primary, Secondary,
and Surface waves)