Understanding Landslides:

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Understanding Landslides

• Junior High Style!

The Lesson Plan
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Objectives

• Design an experiment representing

• an assortment of landslides

• how different materials have varying results

• how scientists predict where landslides can occur

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What is a Landslide?

• A landslide is a rapid downward sliding, flowing,
  or falling of rock, soil, and/or snow/ice under
  the influence of gravity.

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What kind of variables trigger a
landslide?
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Different Types of Landslides
What kind of Landslide will your group attempt
to create?
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Steps to creating your own Landslide

• Completely open the top of the juice/milk carton

• On one face of the carton, cut 3/4 of the way
  down

• Fold over the excess flap

• Fill carton halfway with material

• Add water to material while flattening against
  the side to create the slope

• Once material is soaked with water (without
  material moving) add books to balance carton to
  create an angle of repose

The steepest angle that a loose material can
assume without moving down slope.
SLOWLY

• Add additional water to create a landslide

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????s to think about ????

• Where did you choose to pour the water?
• What kind of results did you see?
• How much water was used to create the slide?
• How high was your angle?
• How fast did the material move?
• If you changed the angle of repose would there be
  a different result?

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Landslides
Mudslides
New Streams
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Steps to take around A possible landslide

• Evacuate if possible
• Contact your local fire, police, or public works
  department
• Inform neighbors
• Stay Alert and stay AWAKE
• Listen for any unusual sounds that might indicate
  moving debris (i.e.. trees cracking, boulders
  knocking together)
• If near a stream or channel look for sudden
  increase or decrease in water flow and change
  from clear to muddy water

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How can Scientists Predict Where Landslides Occur?

• Group Discussion
• What are three out of the four possible
• criteria for a landslide?

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Congrats!!!

• You Passed!!
• Good Luck in High School

The End