Surface Changes
McGlinnen Elementary 2nd/3rd Grade Students
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Glacier vs. Landslide
G
lacier
Noth amerrica's longest glaceier is the bering glacier in alaska, measuring 204 kilometers (127) miles long.
Glacier store about 75% of the worlds fresh warter.
A
ntarctica ice shelves may calve ice bergs that are over 80 kilomters (50 miles) long.
Almost 90% of an ice berg is below water-only about 10% shows above water during the last ice age.
Glaciers covered 32% of the total land area.
Landslide
Casualties in the u.s. are primarily caused by rock falls rock slides, and quick- moving debris.
There have been many landslides through out the years including the rio de janeiro landslide in 2011 which caused over 600 deaths.
Every year, landslides in the u.s. cause roughly $3.5 billion in damage and kill between 25 and 50 people .
On steep hill sides debris flows beging as shallow landlslides that liquefy and accelerate.
A typical landslide trayles a at 10 miler per hour, but can exceed 35 miles per hour.