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Download What is an Earthquake? - Live it, breathe it, love GEOGRAPHY
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Transcript
What is an Earthquake? Y9 Geography What is an Earthquake • To understand how earthquakes are measured, recorded and classified • To evaluate the short and long term impacts of an earthquake Earthquakes • http://www.youtube.com/watch?v=4Y62Ti5_6s&feature=fvsr • An earthquake is the shaking and vibration of the Earth's crust due to movement of the Earth's plates (plate tectonics). Earthquakes can happen along any type of plate boundary How are Earthquakes Measured? • The power of an earthquake is measured using a seismometer. A seismometer detects the vibrations caused by an earthquake. It plots these vibrations on a seismograph. • The strength of an earthquake is measured using the Richter scale. Case Study: Japan 2011 Earthquake • http://www.youtube.com/watch?v=UhkCgaYJoyI
