Key Termsi Flashcards
Cold environment
Area of land permanently covered by ice
Altitude
Height above sea level
Latitude
Distance from the equator
Glacier
Large body of ice that moves under its own weight
Continentality
Distance from the ocean or sea
Glacial retreat
The ablation is larger than the accumilation, glacier shrinks
Glacial advance
Accumilation is greater than ablation, glacier grows
Acumilation
Zones where there are inputs to the glacial buget
Ablation
Zones where there are outputs from the glacial buget
Basal sliding
Glacier moving over the bed with melt water acting as a lubricant
Erosion
Wearing away and removal of materials
Abrasion
Rocks in the glacier scrape over the land and wear it away
Plucking
Meltwater at the base of the glacier freezes. Glacier moves, rock pulled up
Freeze thaw weathering
Water gets into cracks in the rocks, the water freezes and crack expand
Corries
A deep armchair shape hollow in the side of a mountain
Tarn
Deep lake at the base of the corrie filled with meltwater
U shaped valleys
A valley with steep sides but a flat base
Trough
Long, U-shaped valley with flat floors and steep sides
Misfit river
A river in a valley that it didn’t erode
Ordanance Survey
UK mapping system that produce OS maps
Grid reference
4 or 6 figure efrence used to find places on OS maps
Map symbols
An image with letters on used to label places on maps
Thermal expansion
Change of water volume with heat
