A Geologic Hazard--Landslides

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A Geologic Hazard--Landslides

• By Shana Hammers
• Period 6

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Landslide This

• By definition, a landslide is the general term
  for a slowly to very rapidly descending rock or
  debris.

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LandslidesDangerous

• Maps were created to warn about the dangerous
  areas. Here is one that shows the California
  counties that are prone to landsliding.

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Devastating Destruction

• Homes, businesses, and entire cities can be wiped
  out by landslides.
• Southern California experienced landslides after
  the 1994 earthquakes.

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Types of Slides

• Not all landslides are rapid or noticeable.
• Liquefaction is a type caused by earthquakes, in
  which soil turns to liquid.
• Via de las Olas Palisades experienced slow
  sliding (see pic.)

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Damage to Homes

• Thousands of homes effected each year.
• Sometimes homeowners are unaware of sliding.
• Damage is extremely expensive.
• Can be fatal.

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WaterLandslidesBAD!

• Sometimes land slides into water.
• When this occurs
• It can block the flow of water
• Fish, animals, and plants may die
• Water becomes polluted

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Highways and Landslides

• Humans cut through land to make highways
• Steep grading of hills and undercutting of rocks
  cause landslides
• You have all seen ltWATCH FOR FALLING ROCKSgt signs
  that warn of landsliding
• Landslides can ruin roads or cause major traffic
  jams

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THE END