DRRR 1

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Created by
CleanJellyfish49187

Subdecks (1)

Cards (29)

  • Landslides

    • Downward ground movement on a sloping terrain caused by gravity
    • Also known as landslip
  • Landslide formation

    1. Bare vegetation
    2. Inclined location
    3. Heavy rain
  • Sinkhole

    Topographic depression created when groundwater dissolves the underlying limestone bedrock
  • Sinkholes

    • Occur in areas where the soil foundation is made of soft minerals and rocks such as limestone, salt beds, or any acidic rocks
    • Depth ranges from a couple of meters to several miles deep
  • Sinkhole formation

    1. Water from rainfall seeps underneath the soil through cracks and fissures
    2. Water erodes the soil and forms a conduit system
    3. Void forms, either filled with air or water
  • Sinkholes cannot only form holes, they can be shallow or deep, and cannot only occur on land
  • Ideal environment for sinkholes to occur is in areas with limestone, salt beds, or sedimentary deposits, not volcanic craters
  • Landslides are not the same as earthquakes, which are not topographic depressions created by groundwater dissolving limestone
  • Landslides can occur on flat ground due to gravity, not just on inclined terrain
  • The depth of sinkholes ranges from a couple of meters to several miles deep, not just a couple of meters to several miles
  • Debris Flow Landslides are triggered by the slope becoming saturated with water, not sudden slides caused by heavy rain loosening rock
  • Rock Fall Landslides are sudden slides caused by heavy rain loosening rock on the slope, not when the slope becomes saturated with water
  • Soil Creep Landslides involve a very slow downslope movement of particles, not a downward movement of rock debris
  • Slumping Landslides involve a downward movement of rock debris, usually due to removal of earth at the foot of the slope, not a very slow downslope movement of particles
  • Sinkholes are depressions in the ground that result from the collapse of the surface layer of soil, not earthquakes
  • The essential characteristic of rock for producing sinkholes is that it must be soluble, not dense, hard, or lustrous