Glaciation Flashcards
Name 2 features found in upland areas
Corries, tarns, u-shaped valley, v-shaped valley, pyramidal peaks, arête.
Where did the last ice age cover
Most of Europe
How would you describe a drumlin
Like an egg in a basket
What is plucking
The process where ice freezes and onto rocks, it moves and pulls pieces of rock with it
What is ablation
Process which removes snow/ice from surface of the glacier ie reducing snow cover by melting,evaporation etc
How many features is there of a glacier
4- input,storage,flows,output
What is a pyramidal peak
3 corrodes back to back ( pyramid shape )
What is an erratic
A large boulder that is bigger then it’s bedrock
What is crag and tail
Crag is hard rock and tail is softer rock
What is an avalanche
It is a mass of snow and ice that moves rapidly downhill
How long do avalanches usually last
A few minutes
Name 4 effects of
an avalanche
Death/injury to people and animals Mass destruction Landscape destroyed Power line damaged Transport disrupted
Name 3 ways to reduce the effects of an avalanche
Wooden fences for smaller avalanches, plant trees,build shutes over road and rail.
What is a Shute
A covering over road and rail so avalanches go over them instead of onto the road or railway
What is accumulation
When snow is added to a glacier by eg avalanches or precipitation
