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  • Diagram of seismic waves radiating from the focus of earthquake
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 21 July 2007 Size: 97 KB Referencing Hub media

    When an earthquake occurs shockwaves of energy, called seismic waves, are released from the earthquake focus. They shake the Earth and temporarily turn soft deposits, such as clay, into jelly (liquefaction).

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