Continental Drift Theory Brittany Gates
Alfred Wegener <ul><li>a German scientist, meteorologist, and geologist </li></ul><ul><li>Came up with the theory of the C...
Continental Drift Theory <ul><li>Wegner’s hypothesis was that all the continents had once been joined together in a single...
Continental Drift Theory Evidence <ul><li>Fossils </li></ul><ul><li>- he found fossils in Africa and South America that we...
Harry Hess <ul><li>Born on May 24, 1906 </li></ul><ul><li>Died on August 25, 1969 </li></ul><ul><li>Nationality was United...
Sea Floor Spreading <ul><li>At the mid-ocean ridge, molten material rises from the mantle and erupts. The molten material ...
Sea Floor Spreading Evidence <ul><li>Molten Material </li></ul><ul><li>- found strange rocks shaped like pillows or like t...
Other Definitions <ul><li>Subduction- The process by which oceanic crust sinks beneath a deep-ocean trench and into the ma...
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Continental Drift Theory Template

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Continental Drift Theory Template

  1. 1. Continental Drift Theory Brittany Gates
  2. 2. Alfred Wegener <ul><li>a German scientist, meteorologist, and geologist </li></ul><ul><li>Came up with the theory of the Continental Drift </li></ul><ul><li>born on November 1, 1880 </li></ul><ul><li>Died on November 2, 1930 (50 years) </li></ul><ul><li>He was German </li></ul>
  3. 3. Continental Drift Theory <ul><li>Wegner’s hypothesis was that all the continents had once been joined together in a single landmass and have since drifted apart. </li></ul>
  4. 4. Continental Drift Theory Evidence <ul><li>Fossils </li></ul><ul><li>- he found fossils in Africa and South America that were the same animals </li></ul><ul><li>Climate </li></ul><ul><li>- Spitsbergen had tropical plant fossils on it. </li></ul><ul><li>Landmass </li></ul><ul><li>- lines of a mountain range in South America lines up with the one in Argentina </li></ul>
  5. 5. Harry Hess <ul><li>Born on May 24, 1906 </li></ul><ul><li>Died on August 25, 1969 </li></ul><ul><li>Nationality was United states </li></ul><ul><li>Was a geologist </li></ul><ul><li>United States officer in World War ׀׀ </li></ul>
  6. 6. Sea Floor Spreading <ul><li>At the mid-ocean ridge, molten material rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. </li></ul>
  7. 7. Sea Floor Spreading Evidence <ul><li>Molten Material </li></ul><ul><li>- found strange rocks shaped like pillows or like toothpaste squeezed from a tube. Only formed when molten material hardens quickly </li></ul><ul><li>Magnetic Stripes </li></ul><ul><li>-Magnetic poles reverse themselves. </li></ul><ul><li>Drilling Samples </li></ul><ul><li>-They got samples of the ocean floor so they could see if it was molten material </li></ul>
  8. 8. Other Definitions <ul><li>Subduction- The process by which oceanic crust sinks beneath a deep-ocean trench and into the mantle. </li></ul><ul><li>Mid-Ocean Ridge- The undersea mountain chain where new ocean floor is produced. </li></ul><ul><li>Sonar- a device that determines the distance of an object under water by recording echoes of sound waves. </li></ul>

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