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Earthquake

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    Earthquake & Fault
  •   Study   Slideshow
  • PHIVOLCS stands for
    Philippine Institute of Volcanology and Seismology
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  • What causes an Earthquake?
    When a fault suddenly moves, an earthquake occurs.
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  • The image shown is a
    Normal fault
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  • A device used to record earthquakes.
    Seismograph
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  • A series of waves caused by earthquakes or undersea volcanic eruptions.
    Tsunami
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  • The strength of an earthquake as perceived and felt by the people in a certain locality.
    Intensity
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  • It is the energy released by an earthquake.
    Magnitude
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  • It is a point beneath the Earth’s surface where the rock breaks and the earthquake starts.
    Focus
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  • It is a place on the Earth's surface where the earthquake started. It is located above the focus.
    Epicenter
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  • A type of fault wherein rock layers on opposite sides of a fault slide pass each other horizontally.
    Strike-slip Fault
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  • The image shown is a
    Reverse Fault
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  • How do faults occur?
    A fault occurs when the rocks are stressed.
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  • A fault that is likely to become the source of other earthquakes.
    Active Fault
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  • A fault that does not display any seismic activity for more than 10,000 years.
    Inactive Fault
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  • The image shown is the
    Marikina Valley Fault/ West Valley Fault
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  • A break or a fracture in the Earth's crust and along the break there is a significant movement happening.
    Fault
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