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Lesson 2 Plate Tectonics And Volcanoes


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Lesson 2 Plate Tectonics And Volcanoes

  1. 1. Plate names African Indo-Australian Plate North American South American Eurasian Pacific Nazca Antarctic Pacific
  2. 2. Plate Boundaries. First task- To find out what happens at the 4 different plate boundaries.
  3. 3. Constructive plate boundary
  4. 4. Destructive plate boundary
  5. 5. Collision plate boundary
  6. 6. Conservative plate boundary
  7. 7. Task <ul><li>Label the key features at the four plate boundaries. </li></ul><ul><li>Then cut them out and stick them into your books. </li></ul><ul><li>Underneath each I want a sentence to explain what is happening </li></ul><ul><ul><li>Which way are the plates moving. </li></ul></ul><ul><ul><li>What happens as a result. </li></ul></ul>
  8. 8. Homework. <ul><li>To find out the date and location of a recent earthquake and volcano and the impact these had on human activity. </li></ul>
  9. 9. Plate definitions
  10. 10. Label this cross section of a volcano <ul><li>Volcanic bombs, ash, lava, gases </li></ul><ul><li>Magma chamber </li></ul><ul><li>Parasitic cone </li></ul><ul><li>Crater </li></ul><ul><li>Main vent </li></ul>
  11. 11. Active volcano – liable to erupt.
  12. 12. Dormant (sleeping) volcano – a volcano which has not erupted for many years
  13. 13. Extinct volcano – a volcano which has not erupted for many thousands or millions of years
  14. 14. Types of Volcano <ul><li>Composite Volcano </li></ul><ul><li>Shield Volcano </li></ul>
  15. 15. Shield Volcano <ul><li>Occur at Constructive Plate Boundaries. </li></ul><ul><li>Runny Lava that flows along way from the main vent. </li></ul><ul><li>Gives the volcano gentle sides. </li></ul><ul><li>Shield volcanoes almost never erupt violently due to the lava running free (no rocks). </li></ul>
  16. 16. Composite Volcanoes. <ul><li>Occur st destructive plate boundaries. </li></ul><ul><li>Viscous (thick lava) </li></ul><ul><li>The lava cannot flow far from the vent. </li></ul><ul><li>Makes the volcano steep sided. </li></ul><ul><li>Violent eruptions due to rapidly hardeneing rock which blocks vents and allows the pressure to build. </li></ul>
  17. 17. Dominoes. <ul><li>Lets test your knowledge so far. </li></ul>