<ul><li>Wegner’s theory is that once a long, long, time ago all the continents were joined together </li></ul><ul><li>Then...
 
<ul><li>Scientist Alfred Wegener wrote a letter to his girlfriend saying , “Doesn’t the east coast of South America fit ex...
<ul><li>Some scientists thought that there was once a land bridge but Wegner disagreed. He put all the observations togeth...
 
<ul><li>Fossils of identical plants and animals were found on different sides of the ocean </li></ul><ul><li>They  must ha...
<ul><li>It was noticed that when Wegener put the continents together in his map of Pangaea  that landforms from different ...
<ul><li>There were striations caused by ancient glaciers along both coasts of South America and South Africa, patterns for...
 
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Pangaea kristen

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  • Pangaea kristen

    1. 2. <ul><li>Wegner’s theory is that once a long, long, time ago all the continents were joined together </li></ul><ul><li>Then they broke apart to make the 7 continents here today (see next slide) </li></ul>
    2. 4. <ul><li>Scientist Alfred Wegener wrote a letter to his girlfriend saying , “Doesn’t the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined? This is an idea I’ll have to pursue.” </li></ul><ul><li>Later after that he had an hypothesis that a very long time ago the continents were part of one supercontinent which he called PANGAEA! </li></ul>
    3. 5. <ul><li>Some scientists thought that there was once a land bridge but Wegner disagreed. He put all the observations together to come up with the theory. He observed that South American and Africa fit together like a Jigsaw puzzle. He used evidence from the shapes of continents, fossils, landforms, and ancient ice age. </li></ul>
    4. 7. <ul><li>Fossils of identical plants and animals were found on different sides of the ocean </li></ul><ul><li>They must have lived on the same continent at some time in the past, because there’s no way they could not have travelled across the huge ocean! </li></ul>
    5. 8. <ul><li>It was noticed that when Wegener put the continents together in his map of Pangaea that landforms from different continents matched </li></ul><ul><li>Like the mountains that run east to west across South Africa lined up with the mountains in Argentina </li></ul><ul><li>In South Africa unusual rock formations and coal deposits were the same as the ones in Brazil </li></ul>
    6. 9. <ul><li>There were striations caused by ancient glaciers along both coasts of South America and South Africa, patterns formed were the same </li></ul><ul><li>Wegener found that continents where the evidence of deposits of glaciers had be found once fit around the south pole where it would have been very cold </li></ul><ul><li>He thought of the idea of the continents moving or drifting (continental drift) </li></ul>

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