PSNB+1.3

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=1.3 Drifting Continents=


 * Pangea:** All continents used to be joined into a super continent. Means- All lands.
 * Continental Drift:** The moving?separation of the continents.
 * Fossil:** Any trace of an ancient object, that has been preserved in rock.

Outline

 * ===Introduction===
 * Africa and South America fit together like a jigsaw puzzle
 * ===The Theory of Continental Drift===
 * 1910 Alfred Wegner
 * Hypothesis- All continents were joined together (Pangea)
 * Joined 300 million years ago
 * Gathered lots of evidence
 * === === Evidence from landforms
 * Mountains
 * Lined up edges of continents
 * South Africa and Argentina
 * Evidence from coal fields
 * European coal fields in North America
 * **Evidence from Fossils**
 * Found dinosaur and plant fossils of
 * Evidence from climate
 * Current places in the world had opposite climate
 * Hot places had rock scratches, indicated glaciers were there
 * ===Scientists reject Wegener's theory===
 * No one payed attention to his theory till 40 years after he died
 * Because then they had more clues about the Continental Drift

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