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  • I'm Alfred Wegener, the creator of the continental drift theory.  That theory proposed that all the continents were together at one point, but moved overtime.
  • A transform earthquake happens at a strike slip fault where two tectonic plates shear against each other while going opposite directions.  This creates tension and makes an earthquake.
  • A convergent earthquake occurs when a continental part of the crust goes on top of the oceanic crust.  This happens because the continental is more denser than the oceanic.  Subduction happens when part of the crust goes on top of the crust.
  • A divergent earthquake happens when the seafloor spreads and that spreading forces the crust into each other making a mountain. The Mid-Atlantic Ridge is anocean ridge. A convection current is when convection moves the water around.  That makes a divergent fault.
  • A earthquake is a natural disaster that happens when the tectonic plates release energy from them grinding against each other.  Earthquakes are measured on the Richter Scale.  A seismograph measures the seismic activity which usually goes up when there is an earthquake.  There are two types of earthquake waves, the P waves which happen first. The S waves are usually more destructive and happen second.  Triangulation is used to help see where the earthquake came from.  The epicenter of the earthquake is where it is started.
  • A volcano is a mountain with magma in it.  There are three types of volcanoes, shield, composite and cinder. Composite one are the most dangerous. Volcanoes are either explosive or nonexplosive. Most volcanoes are found on the ring of fire.
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