Caution!
Land is Unstable and May Fall At Any Time
Land is Unstable and May Fall At Any Time
The percentage of the Earth that is covered by glaciers
What is a factor that can trigger a mass movement, shaking materials like soil loose?
An earthquake can trigger a mass movement, a skiier, etc.
The slow, steady, downhill flow of loose materials.
What is a creep
Rocks shaped by abrasion are known as
What are ventifacts
Glaciers deposit unsorted ridges of till called...?
What are moraines
one distinct sign of creep
tilted poles, fences, etc.
The lowering of the land surface caused by the winds removal of surface particles
the place where snow builds on a glacier
What is the zone of accumulation
Where meltwater from a glacier flows and deposits
What is an outwash plain
strong winds that cause particles to stay airborne for long distances
what is suspension
Which of the following occurs after a volcanic eruption and involves melting ice and ash?
What is a lahar
A rich silt deposit that is very fertile and is transported by wind erosion.
What is a loess
What are the elongated landforms made of older moraines over which glaciers have moved?
Drumlins!
creep that occurs in permafrost regions
What is solifluction
What are the four main factors that influence mass movements?
materials weight, resistance to flow/sliding, trigger, the amount of water present
What are the four different types of dunes?
Barchan, Longitudinal, Parabolic, Transverse
A sharp steep ridge formed when two cirques on opposite sides of a valley glacier meet
What is an arrete
Winding ridges of sediment that are left behind by streams that flow underneath continental glaciers
What are eskers
the steepest side of a sand dune that is protected by the wind
the leeward side