Earthquakes: Completed

  • Created by: Janelle M
  • Created on: 12-06-18 13:44
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  • Earthquakes
    • What causes earthquakes?
      • Earthquakes is the sudden violent shaking of the ground. This is because the Earth's plates are constantly moving. This is  because of friction, plates try to move but become stuck.
      • Pressure builds up because the plates are still trying to move. When the pressure is released it sends out huge amounts of energy causing the Earth's surface to shake violently.
      • The point inside the Earth's crust where the earthquake originates from is known as the focus. The earthquake's energy is released in seismic waves, which spread out from the focus.
      • The seismic waves are most powerful at the epicentre. The epicentre is the point on the Earth's surface directly above the focus.
    • Earthquakes are found at all three plate boundaries: divergent, convergent and conservative plate boundaries.


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