What is Pangaea?

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What is Pangaea?

• A quick look at
• the super-continent!

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What do YOU know??(Students, tell me now!) ?
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Set Up Your Note Sheet
What is Pangaea? Who? What? How? Why?
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Pangaea

• Alfred Wegener (1880-1930) first proposed the
  theory of Continental Drift, which states that
  the Earth's continents float on a more dense
  layer of rock
• He hypothesized that there was an original,
  gigantic super-continent 300 million years ago,
  which he named Pangaea (greek for all
  earth/land).

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Talk to your neighbor!

• What did you write in your notes??

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What are the names of the land pieces that made
up Pangaea?

• Eur-Asia
• North America
• South America
• Africa
• India
• Australia
• Antarctica

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Talked to your neighbor..

• What have you learned so far?
• What did you already know?

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HOW do we know Pangaea existed?(Anyone?)

• Hint Look at your Puzzle you completed
  yesterday!

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Scientific Evidence!

• Fossil Evidence - There are similar fossil
  remains found on more than one continent.
• Climate evidence organisms that couldnt live
  in certain present-day areas have had their
  fossils found there!
• Land evidence coal mines, mountain ranges, etc.

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More Scientific Evidence

• Land Features
• Mountain Ranges line up on different continents.
• European coal fields match up with North American
  coal fields.

• Climate
• Scratches in rocks show that glaciers covered
  Africa.so it must have been closer to the poles.
• Cold Arctic Islands have fossils from warm
  climate animalsso it must have been near the
  equator.

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Talk to your table

• What have you written in your notes?

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Is Continental Drift REAL?

• Pangaea IS, but Continental Drift is NOT!
• Scientists do not accept Wegeners Theory
  (continents do NOT float on more dense rock!).
• BUT, the theory of PLATE TECTONICS is real and
  accepted by scientists!

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What happened to Pangaea?

• Over time the plates began to move apart.
• This was caused by convection currents in the
  asthenosphere.

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Connections???

• What is the connection between density and
  Pangaea??

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STOP!

• Lets create Pangaea notecards!

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STOP!

• And Read!
• Text book pages 136-140

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So, what is Plate Tectonics?

• Lets read the article take Cornell Notes! Then
  we can complete Cornell notes and then a venn
  diagram!

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Theory of Continental Drift vs Theory of Plate
Tectonics
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Venn Diagram
Plate Tectonics
Continental Drift