JBTC1.3

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Notes 1.3
Pangea** - means "all lands" or that all the continents were together.
 * vocabulary:
 * continental drift** - moving of the continents apart.
 * fossil** - any trace of an ancient organism that has been preserved by rock.

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Outline
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**Introduction**

 * Africa and South America looks like jigsaw puzzles that would fit togther.

**The Theory of the Continental Drift**

 * 1910 ; Alfred Wegener
 * Hypothesis: the continents were once joined together.
 * 300 millions years ago
 * Evidence from Landforms**
 * mountains - coal fields
 * mountain range from South America connects to Argetina's mountain range.
 * Evidence from Fossils**
 * found common dinosaur fossils in different places
 * Evidence from Climate**
 * different places in the world had opposite climates
 * hot places had rock scratches which indicated that glaciers were once there

**Scientists Reject Wegener's theory**

 * Wegener could not explain the forces that push or pull the continents