When the earth moves

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When the earth moves

  1. 1. When the earth moves…<br />Plate tectonics<br />
  2. 2. Why do tectonic plates move?<br />
  3. 3.
  4. 4. Convection currents<br />
  5. 5. Continental drift, plate movement<br />http://www.youtube.com/watch?v=uGcDed4xVD4<br />
  6. 6. Key Terms<br />Fault: A fracture in the Earth’s crust that shows signs of movement<br />Continental drift: the movement of the continents over time through plate tectonics<br />Subduction Zone: the area of a destructive plate boundary where one plate descends beneath another<br />Convergent (aka destructive): where plates collide together, forcing one plate downwards to form either volcanoes or mountains or trenches<br />Divergent(aka constructive): where plates are moving apart, allowing magma from the mantle to reach the earth’s surface + create new land<br />Transform: where plates slide past each other, causing lots of earthquakes<br />Continental Crust: lighter, permanent land that forms our continents<br />Oceanic Crust: denser crust under the oceans, constantly recycled<br />
  7. 7. Tectonics enquiry…you have 30mins<br />Plate tectonics<br />Plate tectonics<br />on a flip camera<br /><ul><li>Use the textbooks to investigate plate tectonics : how the earth moves, why & how it creates earthquakes and volcanoes.
  8. 8. Include keywords (e.g. continental drift, subduction, convergent, divergent, transform, convection, etc.)</li></li></ul><li>Exam Q<br />Describe, with the aid of a diagram, the processes that causes tectonic plates to move <br />[4 marks]<br />

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