6th Grade Ch. 2 Sec. 4 Earthquake Safety
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6th Grade Ch. 2 Sec. 4 Earthquake Safety

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6th Grade Ch. 2 Sec. 4 Earthquake Safety 6th Grade Ch. 2 Sec. 4 Earthquake Safety Presentation Transcript

  • Ch. 2 Sec. 4 Earthquake Safety
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  • earthquake risk
    • Geologists determine earthquake risk by locating where faults are active & where past earthquakes have occurred.
    View slide
  • How earthquakes cause damage
    • shaking
    • Triggers landslides or avalanches
    • Damages bldgs.
    • Depends on type of rock & soil
    View slide
  • when earthquake’s violent shaking suddenly turns loose, soft soil into liquid mud 2. liquefaction
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    • earthquake that occurs after larger
    • earthquake in same area
    • may strike hours, days or months later
    3.
  • 4. tsunami
  • large wave created by water displaced by earthquakes on ocean floor
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  • best way to protect yourself during an earthquake
    • drop, cover & hold
  • When the shaking first starts... DROP to the floor. Take COVER under a sturdy desk, table, or other furniture. If there is nothing available to take cover under, crouch against an interior wall and protect your head and neck with your arms. If seeking cover under a piece of furniture, HOLD on to it and be prepared to move with it during the quake. STAY AWAY FROM DANGER SPOTS NEAR WINDOWS, HANGING OBJECTS, MIRRORS, OR ANYTHING THAT MIGHT FALL OVER.
  • Ways to Make Buildings Safer
    • Make new buildings stronger
    • & more flexible
    • Modify older buildings
    • Choose safe location to build
    • Build base-isolated buildings
  • base-isolated building
    • bldg. designed to reduce amt. of energy that reaches bldg. during earthquake
  • A base-isolated building rests on shock-absorbing rubber pads or springs.