Plate Tectonics

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Plate Tectonics

• Earth History

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Activate!
Read the below article and hypothesize about how
it would be possible for the same dinosaur
fossils to be found on different continents.
http//www.telegraph.co.uk/science/dinosaurs/89674
59/Fossils-of-dicynodont-discovered-on-every-conti
nent.html
In notebook Title- Fossils Write your hypothesis
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Lesson Essential Questions

• 1. What observations from today support
  inferences about the Earths Geologic past?

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Vocabulary

• Plate tectonics the science of how the large
  pieces of the crust of Earth move
• Continental drift describes the drifting and
  sliding motion of the large pieces of Earth
• Pangaea name of a former supercontinent

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General Information

• Scientists think that the Earth was created
  about 5 billion years ago. At first, the Earth
  was just a ball of molten rock and gasses. As it
  began to cool, dense materials like iron sank
  down into its core. Lighter materials like
  compounds of oxygen and water rose toward the
  surface. That's why the Earth is made up of
  different layers -- as you can see in the cross
  section on the next slide.

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(No Transcript)
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General Information

• The Earth is made up of layers. Scientists
  discovered this through the use of vibrations.
• Whats a vibration?

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The Crust

• Hard and rigid, the crust is the outermost layer
  of the Earth
• The crust is also the most narrow of the layers
  of the Earth. Measuring only an average of 20
  miles deep under the continents.

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The Layers of The Earth Lyrics The Crust

• The continental crusts surface is where we
  breatheA lot of rock up to 25 miles deep.The
  oceanic crust is next doorIts 3-5 miles thick
  just below the ocean floor.Earths surface 70
  H20.Where do you get all that water? Salty sea
  flow,fresh waters in the glaciers, ice caps,
  and snow.
• ChorusThrow your hands up for the layers of the
  earthThrow em up for whats below the
  surfaceThrow your hands up, and lets
  discussThe inner core, outer core, mantle, and
  crust

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The Lithosphere

• Found between The Crust and The Mantle
• Made up of The Crust and a little bit of The
  Upper Mantle
• Divided into several constantly (slowly) moving
  plates of solid rock from which the continents
  and oceans are formed.

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Asthenosphere

• A section of The Upper Mantle on which The
  Lithosphere plates float
• Made of a hot semiliquid material

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The Mantle

• Is divided into two regions. The Upper Mantle,
  and the Lower Mantle.
• This layer is dense, hot and made of hot,
  semisolid rock.
• Found directly below the crust
• About 1,800 miles thick.

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The Layers of The Earth Lyrics The Mantle

• ChorusThrow your hands up for the layers of the
  earthThrow em up for whats below the
  surfaceThrow your hands up, and lets
  discussThe inner core, outer core, mantle, and
  crust
• Verse IIThe mantle layer is the largest of the
  class.About half of our planets mass.The
  mantle is composed of very hot dense rocks,That
  move and flow, always on the go, they never
  lock,Never stop, and theyre responsible for
  tectonic shiftPlease believe the Earths plates
  are adriftIts pretty thick and the heat is
  awesome1,600 at the top, 4,000 at the bottom

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The Core

• The core is divided into two regions.
• The Outer Core
• The only liquid layer of the Earth
• A sea of iron and nickel
• 1,800-3,200 miles below the Earths surface
• 1,400 miles thick
• The Inner Core
• Extremely Hot solid ball found in the center of
  the Earth
• 3,200-3,925 miles below the Earths surface
• 750 miles in diameter

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Lyrics to The Layers of The Earth The Core

• ChorusThrow your hands up for the layers of the
  earthThrow em up for whats below the
  surfaceThrow your hands up, and lets
  discussThe inner core, outer core, mantle, and
  crustVerse IThe layer well discuss firstIs
  the central inner core, in the center of the
  earthA solid ball buried below the dirtWe
  believe its primarily metallic ironYou could
  never take a trip to the inner core, right?The
  heat will burn you up, 9,000º Fahrenheit4,000
  miles below the Earths crustOne down three to
  go yall.1,800 miles from the tip topThe outer
  core is hard at work and it dont stop.Its busy
  spinning around the inner core, and listen,This
  steady movement causes Earths magnetism.Ranging
  from 4 to 9,000 degrees,It contributes 1/5 of
  the heat flowin to you and me.Its liquid
  metals that violently flowSo let it settle and
  when youre ready let me know. Just

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Layers of the Earth Rap

• Here we go again
• This time I want you to listen to the details

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(No Transcript)
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Fossils

• What are fossils and what do they tell us about
  the past?
• Go through each station and take notes on the
  different kinds of fossils you see there. Think
  about what those fossils could tell a scientist.

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Fossils

• Answer your Check for Understanding 1 and turn
  in.

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Use your iPad to

• Complete some research on continental drift and
  fill in the provided graphic organizer.

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Continental Drift

• Answer your Check for Understanding 2

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Plate Tectonics Puzzle

• Use the rock and fossil evidence to determine how
  the continents once fit together.

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Pangaea Puzzle Article

• Read the article and Complete the Graphic
  Organizer.

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Continental Drift

• Read the article about continental drift.
• Quickly turn to your neighbor and summarize what
  you read.
• Once you think you have a good summary, record it
  in your notebook.

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Continental Drift

• Answer your Check for Understanding 3

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Summarize

• Alfred Wegener proposed the idea of Continental
  Drift. He believed that all of the continents
  were once all together and have slowly drifted
  apart after Pangaea 200 million years ago.

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How Does it Happen?

• Video Clip

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Vocabulary Continued

• BoundaryThe border between two tectonic plates.
• Collision ZoneThe place where a collision
  between two continental plates crunches and folds
  the rocks at the boundary, lifting them up and
  leading to mountain formation.

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Vocabulary Continued

• Divergent BoundaryThe boundary that occurs where
  two plates are moving apart from each other.

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• Convergent BoundaryThe boundary that occurs
  where two plates are pushing toward each other.

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• Transform BoundaryThe boundary that occurs where
  two plates slide past each other.

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Vocabulary Continued

• FaultA crack or fracture in Earth's crust where
  two tectonic plates grind past each other in a
  horizontal direction.
• RiftA dropped zone where two tectonic plates are
  pulling apart.

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Create a 4 square chart
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Plate Tectonics Lab

• DO NOT EAT THE COOKIE!
• Sliding Plate Over Asthenosphere
• Use your cookie to demonstrate what this looks
  like.

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Plate Tectonics Lab

• DO NOT EAT THE COOKIE!
• Divergent Plate Boundary
• Use your cookie to demonstrate what this looks
  like.

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Plate Tectonics Lab

• DO NOT EAT THE COOKIE!
• Convergent Plate Boundary
• Use your cookie to demonstrate what this looks
  like.

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Plate Tectonics Lab

• DO NOT EAT THE COOKIE!
• Transform Plate Boundary
• Use your cookie to demonstrate what this looks
  like.

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Plate Tectonics Lab

• EAT THE COOKIE!
• Numnumnumnum
• And draw what the different boundaries look like
  in your notebook.

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Multimedia

• On the iPads go to this website
• http//www.learner.org/interactives/dynamicearth/d
  rift.html
• Complete the worksheet as you work your way
  through the interactive.

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Plate Tectonics

• Answer your Check for Understanding 4

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Timeline

• Timeline Interactive
• http//www.ucmp.berkeley.edu/education/exploration
  s/tours/geotime/gtpage1.html